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0ad/source/gui/CInput.cpp
bb 94716b9987 Remove an unused variable 
The variable was introduced in 492e49da38 without being used, neither
did it become used in a later commit. To me it seems that it is a
left-over from a copy paste, as the ".left" functions do use the
variable.
Notice 74c420f658 did cleanup around these lines, but did not remove
this variable

Patch By: Angen
Differential Revision: https://code.wildfiregames.com/D1813
This was SVN commit r22166.
2019-04-06 22:04:13 +00:00

2137 lines
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/* Copyright (C) 2017 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "CInput.h"
#include "CGUIScrollBarVertical.h"
#include "GUI.h"
#include "graphics/FontMetrics.h"
#include "graphics/ShaderManager.h"
#include "graphics/TextRenderer.h"
#include "lib/ogl.h"
#include "lib/sysdep/clipboard.h"
#include "lib/timer.h"
#include "lib/utf8.h"
#include "ps/CLogger.h"
#include "ps/ConfigDB.h"
#include "ps/GameSetup/Config.h"
#include "ps/Globals.h"
#include "ps/Hotkey.h"
#include "renderer/Renderer.h"
#include <sstream>
extern int g_yres;
CInput::CInput()
: m_iBufferPos(-1), m_iBufferPos_Tail(-1), m_SelectingText(false), m_HorizontalScroll(0.f),
m_PrevTime(0.0), m_CursorVisState(true), m_CursorBlinkRate(0.5), m_ComposingText(false),
m_iComposedLength(0), m_iComposedPos(0), m_iInsertPos(0), m_Readonly(false)
{
AddSetting(GUIST_int, "buffer_position");
AddSetting(GUIST_float, "buffer_zone");
AddSetting(GUIST_CStrW, "caption");
AddSetting(GUIST_int, "cell_id");
AddSetting(GUIST_CStrW, "font");
AddSetting(GUIST_CStrW, "mask_char");
AddSetting(GUIST_bool, "mask");
AddSetting(GUIST_int, "max_length");
AddSetting(GUIST_bool, "multiline");
AddSetting(GUIST_bool, "readonly");
AddSetting(GUIST_bool, "scrollbar");
AddSetting(GUIST_CStr, "scrollbar_style");
AddSetting(GUIST_CGUISpriteInstance, "sprite");
AddSetting(GUIST_CGUISpriteInstance, "sprite_selectarea");
AddSetting(GUIST_CColor, "textcolor");
AddSetting(GUIST_CColor, "textcolor_selected");
AddSetting(GUIST_CStrW, "tooltip");
AddSetting(GUIST_CStr, "tooltip_style");
CFG_GET_VAL("gui.cursorblinkrate", m_CursorBlinkRate);
CGUIScrollBarVertical* bar = new CGUIScrollBarVertical();
bar->SetRightAligned(true);
AddScrollBar(bar);
}
CInput::~CInput()
{
}
void CInput::UpdateBufferPositionSetting()
{
int* bufferPos = (int*)m_Settings["buffer_position"].m_pSetting;
*bufferPos = m_iBufferPos;
}
void CInput::ClearComposedText()
{
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
pCaption->erase(m_iInsertPos, m_iComposedLength);
m_iBufferPos = m_iInsertPos;
UpdateBufferPositionSetting();
m_iComposedLength = 0;
m_iComposedPos = 0;
}
InReaction CInput::ManuallyHandleEvent(const SDL_Event_* ev)
{
ENSURE(m_iBufferPos != -1);
switch (ev->ev.type)
{
case SDL_HOTKEYDOWN:
{
if (m_ComposingText)
return IN_HANDLED;
return ManuallyHandleHotkeyEvent(ev);
}
// SDL2 has a new method of text input that better supports Unicode and CJK
// see https://wiki.libsdl.org/Tutorials/TextInput
case SDL_TEXTINPUT:
{
if (m_Readonly)
return IN_PASS;
// Text has been committed, either single key presses or through an IME
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
std::wstring text = wstring_from_utf8(ev->ev.text.text);
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
if (m_ComposingText)
{
ClearComposedText();
m_ComposingText = false;
}
if (m_iBufferPos == (int)pCaption->length())
pCaption->append(text);
else
pCaption->insert(m_iBufferPos, text);
UpdateText(m_iBufferPos, m_iBufferPos, m_iBufferPos+1);
m_iBufferPos += text.length();
UpdateBufferPositionSetting();
m_iBufferPos_Tail = -1;
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
return IN_HANDLED;
}
case SDL_TEXTEDITING:
{
if (m_Readonly)
return IN_PASS;
// Text is being composed with an IME
// TODO: indicate this by e.g. underlining the uncommitted text
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
const char* rawText = ev->ev.edit.text;
int rawLength = strlen(rawText);
std::wstring wtext = wstring_from_utf8(rawText);
debug_printf("SDL_TEXTEDITING: text=%s, start=%d, length=%d\n", rawText, ev->ev.edit.start, ev->ev.edit.length);
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
// Remember cursor position when text composition begins
if (!m_ComposingText)
m_iInsertPos = m_iBufferPos;
else
{
// Composed text is replaced each time
ClearComposedText();
}
m_ComposingText = ev->ev.edit.start != 0 || rawLength != 0;
if (m_ComposingText)
{
pCaption->insert(m_iInsertPos, wtext);
// The text buffer is limited to SDL_TEXTEDITINGEVENT_TEXT_SIZE bytes, yet start
// increases without limit, so don't let it advance beyond the composed text length
m_iComposedLength = wtext.length();
m_iComposedPos = ev->ev.edit.start < m_iComposedLength ? ev->ev.edit.start : m_iComposedLength;
m_iBufferPos = m_iInsertPos + m_iComposedPos;
// TODO: composed text selection - what does ev.edit.length do?
m_iBufferPos_Tail = -1;
}
UpdateBufferPositionSetting();
UpdateText(m_iBufferPos, m_iBufferPos, m_iBufferPos+1);
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
return IN_HANDLED;
}
case SDL_KEYDOWN:
{
if (m_ComposingText)
return IN_HANDLED;
// Since the GUI framework doesn't handle to set settings
// in Unicode (CStrW), we'll simply retrieve the actual
// pointer and edit that.
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
SDL_Keycode keyCode = ev->ev.key.keysym.sym;
ManuallyImmutableHandleKeyDownEvent(keyCode, pCaption);
ManuallyMutableHandleKeyDownEvent(keyCode, pCaption);
UpdateBufferPositionSetting();
return IN_HANDLED;
}
default:
{
return IN_PASS;
}
}
}
void CInput::ManuallyMutableHandleKeyDownEvent(const SDL_Keycode keyCode, CStrW* pCaption)
{
if (m_Readonly)
return;
wchar_t cooked = 0;
switch (keyCode)
{
case SDLK_TAB:
{
SendEvent(GUIM_TAB, "tab");
// Don't send a textedit event, because it should only
// be sent if the GUI control changes the text
break;
}
case SDLK_BACKSPACE:
{
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
else
{
m_iBufferPos_Tail = -1;
if (pCaption->empty() || m_iBufferPos == 0)
break;
if (m_iBufferPos == (int)pCaption->length())
*pCaption = pCaption->Left((long)pCaption->length() - 1);
else
*pCaption = pCaption->Left(m_iBufferPos - 1) +
pCaption->Right((long)pCaption->length() - m_iBufferPos);
--m_iBufferPos;
UpdateText(m_iBufferPos, m_iBufferPos + 1, m_iBufferPos);
}
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
break;
}
case SDLK_DELETE:
{
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
else
{
if (pCaption->empty() || m_iBufferPos == (int)pCaption->length())
break;
*pCaption = pCaption->Left(m_iBufferPos) +
pCaption->Right((long)pCaption->length() - (m_iBufferPos + 1));
UpdateText(m_iBufferPos, m_iBufferPos + 1, m_iBufferPos);
}
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
break;
}
case SDLK_KP_ENTER:
case SDLK_RETURN:
{
// 'Return' should do a Press event for single liners (e.g. submitting forms)
// otherwise a '\n' character will be added.
bool multiline;
GUI<bool>::GetSetting(this, "multiline", multiline);
if (!multiline)
{
SendEvent(GUIM_PRESSED, "press");
break;
}
cooked = '\n'; // Change to '\n' and do default:
FALLTHROUGH;
}
default: // Insert a character
{
// In SDL2, we no longer get Unicode wchars via SDL_Keysym
// we use text input events instead and they provide UTF-8 chars
if (cooked == 0)
return;
// check max length
int max_length;
GUI<int>::GetSetting(this, "max_length", max_length);
if (max_length != 0 && (int)pCaption->length() >= max_length)
break;
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
m_iBufferPos_Tail = -1;
if (m_iBufferPos == (int)pCaption->length())
*pCaption += cooked;
else
*pCaption = pCaption->Left(m_iBufferPos) + cooked +
pCaption->Right((long)pCaption->length() - m_iBufferPos);
UpdateText(m_iBufferPos, m_iBufferPos, m_iBufferPos + 1);
++m_iBufferPos;
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
break;
}
}
}
void CInput::ManuallyImmutableHandleKeyDownEvent(const SDL_Keycode keyCode, CStrW* pCaption)
{
bool shiftKeyPressed = g_keys[SDLK_RSHIFT] || g_keys[SDLK_LSHIFT];
switch (keyCode)
{
case SDLK_HOME:
{
// If there's not a selection, we should create one now
if (!shiftKeyPressed)
{
// Make sure a selection isn't created.
m_iBufferPos_Tail = -1;
}
else if (!SelectingText())
{
// Place tail at the current point:
m_iBufferPos_Tail = m_iBufferPos;
}
m_iBufferPos = 0;
m_WantedX = 0.0f;
UpdateAutoScroll();
break;
}
case SDLK_END:
{
// If there's not a selection, we should create one now
if (!shiftKeyPressed)
{
// Make sure a selection isn't created.
m_iBufferPos_Tail = -1;
}
else if (!SelectingText())
{
// Place tail at the current point:
m_iBufferPos_Tail = m_iBufferPos;
}
m_iBufferPos = (long)pCaption->length();
m_WantedX = 0.0f;
UpdateAutoScroll();
break;
}
/**
* Conventions for Left/Right when text is selected:
*
* References:
*
* Visual Studio
* Visual Studio has the 'newer' approach, used by newer versions of
* things, and in newer applications. A left press will always place
* the pointer on the left edge of the selection, and then of course
* remove the selection. Right will do the exact same thing.
* If you have the pointer on the right edge and press right, it will
* in other words just remove the selection.
*
* Windows (eg. Notepad)
* A left press always takes the pointer a step to the left and
* removes the selection as if it were never there in the first place.
* Right of course does the same thing but to the right.
*
* I chose the Visual Studio convention. Used also in Word, gtk 2.0, MSN
* Messenger.
*/
case SDLK_LEFT:
{
m_WantedX = 0.f;
if (shiftKeyPressed || !SelectingText())
{
if (!shiftKeyPressed)
m_iBufferPos_Tail = -1;
else if (!SelectingText())
m_iBufferPos_Tail = m_iBufferPos;
if (m_iBufferPos > 0)
--m_iBufferPos;
}
else
{
if (m_iBufferPos_Tail < m_iBufferPos)
m_iBufferPos = m_iBufferPos_Tail;
m_iBufferPos_Tail = -1;
}
UpdateAutoScroll();
break;
}
case SDLK_RIGHT:
{
m_WantedX = 0.0f;
if (shiftKeyPressed || !SelectingText())
{
if (!shiftKeyPressed)
m_iBufferPos_Tail = -1;
else if (!SelectingText())
m_iBufferPos_Tail = m_iBufferPos;
if (m_iBufferPos < (int)pCaption->length())
++m_iBufferPos;
}
else
{
if (m_iBufferPos_Tail > m_iBufferPos)
m_iBufferPos = m_iBufferPos_Tail;
m_iBufferPos_Tail = -1;
}
UpdateAutoScroll();
break;
}
/**
* Conventions for Up/Down when text is selected:
*
* References:
*
* Visual Studio
* Visual Studio has a very strange approach, down takes you below the
* selection to the next row, and up to the one prior to the whole
* selection. The weird part is that it is always aligned as the
* 'pointer'. I decided this is to much work for something that is
* a bit arbitrary
*
* Windows (eg. Notepad)
* Just like with left/right, the selection is destroyed and it moves
* just as if there never were a selection.
*
* I chose the Notepad convention even though I use the VS convention with
* left/right.
*/
case SDLK_UP:
{
if (!shiftKeyPressed)
m_iBufferPos_Tail = -1;
else if (!SelectingText())
m_iBufferPos_Tail = m_iBufferPos;
std::list<SRow>::iterator current = m_CharacterPositions.begin();
while (current != m_CharacterPositions.end())
{
if (m_iBufferPos >= current->m_ListStart &&
m_iBufferPos <= current->m_ListStart + (int)current->m_ListOfX.size())
break;
++current;
}
float pos_x;
if (m_iBufferPos - current->m_ListStart == 0)
pos_x = 0.f;
else
pos_x = current->m_ListOfX[m_iBufferPos - current->m_ListStart - 1];
if (m_WantedX > pos_x)
pos_x = m_WantedX;
// Now change row:
if (current != m_CharacterPositions.begin())
{
--current;
// Find X-position:
m_iBufferPos = current->m_ListStart + GetXTextPosition(current, pos_x, m_WantedX);
}
// else we can't move up
UpdateAutoScroll();
break;
}
case SDLK_DOWN:
{
if (!shiftKeyPressed)
m_iBufferPos_Tail = -1;
else if (!SelectingText())
m_iBufferPos_Tail = m_iBufferPos;
std::list<SRow>::iterator current = m_CharacterPositions.begin();
while (current != m_CharacterPositions.end())
{
if (m_iBufferPos >= current->m_ListStart &&
m_iBufferPos <= current->m_ListStart + (int)current->m_ListOfX.size())
break;
++current;
}
float pos_x;
if (m_iBufferPos - current->m_ListStart == 0)
pos_x = 0.f;
else
pos_x = current->m_ListOfX[m_iBufferPos - current->m_ListStart - 1];
if (m_WantedX > pos_x)
pos_x = m_WantedX;
// Now change row:
// Add first, so we can check if it's .end()
++current;
if (current != m_CharacterPositions.end())
{
// Find X-position:
m_iBufferPos = current->m_ListStart + GetXTextPosition(current, pos_x, m_WantedX);
}
// else we can't move up
UpdateAutoScroll();
break;
}
case SDLK_PAGEUP:
{
GetScrollBar(0).ScrollMinusPlenty();
UpdateAutoScroll();
break;
}
case SDLK_PAGEDOWN:
{
GetScrollBar(0).ScrollPlusPlenty();
UpdateAutoScroll();
break;
}
default:
{
break;
}
}
}
InReaction CInput::ManuallyHandleHotkeyEvent(const SDL_Event_* ev)
{
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
bool shiftKeyPressed = g_keys[SDLK_RSHIFT] || g_keys[SDLK_LSHIFT];
std::string hotkey = static_cast<const char*>(ev->ev.user.data1);
if (hotkey == "paste")
{
if (m_Readonly)
return IN_PASS;
m_WantedX = 0.0f;
wchar_t* text = sys_clipboard_get();
if (text)
{
if (SelectingText())
DeleteCurSelection();
if (m_iBufferPos == (int)pCaption->length())
*pCaption += text;
else
*pCaption = pCaption->Left(m_iBufferPos) + text +
pCaption->Right((long) pCaption->length()-m_iBufferPos);
UpdateText(m_iBufferPos, m_iBufferPos, m_iBufferPos+1);
m_iBufferPos += (int)wcslen(text);
UpdateAutoScroll();
UpdateBufferPositionSetting();
sys_clipboard_free(text);
SendEvent(GUIM_TEXTEDIT, "textedit");
}
return IN_HANDLED;
}
else if (hotkey == "copy" || hotkey == "cut")
{
if (m_Readonly && hotkey == "cut")
return IN_PASS;
m_WantedX = 0.0f;
if (SelectingText())
{
int virtualFrom;
int virtualTo;
if (m_iBufferPos_Tail >= m_iBufferPos)
{
virtualFrom = m_iBufferPos;
virtualTo = m_iBufferPos_Tail;
}
else
{
virtualFrom = m_iBufferPos_Tail;
virtualTo = m_iBufferPos;
}
CStrW text = (pCaption->Left(virtualTo)).Right(virtualTo - virtualFrom);
sys_clipboard_set(&text[0]);
if (hotkey == "cut")
{
DeleteCurSelection();
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
}
}
return IN_HANDLED;
}
else if (hotkey == "text.delete.left")
{
if (m_Readonly)
return IN_PASS;
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
if (!pCaption->empty() && m_iBufferPos != 0)
{
m_iBufferPos_Tail = m_iBufferPos;
CStrW searchString = pCaption->Left(m_iBufferPos);
// If we are starting in whitespace, adjust position until we get a non whitespace
while (m_iBufferPos > 0)
{
if (!iswspace(searchString[m_iBufferPos - 1]))
break;
m_iBufferPos--;
}
// If we end up on a punctuation char we just delete it (treat punct like a word)
if (iswpunct(searchString[m_iBufferPos - 1]))
m_iBufferPos--;
else
{
// Now we are on a non white space character, adjust position to char after next whitespace char is found
while (m_iBufferPos > 0)
{
if (iswspace(searchString[m_iBufferPos - 1]) || iswpunct(searchString[m_iBufferPos - 1]))
break;
m_iBufferPos--;
}
}
UpdateBufferPositionSetting();
DeleteCurSelection();
SendEvent(GUIM_TEXTEDIT, "textedit");
}
UpdateAutoScroll();
return IN_HANDLED;
}
else if (hotkey == "text.delete.right")
{
if (m_Readonly)
return IN_PASS;
m_WantedX = 0.0f;
if (SelectingText())
DeleteCurSelection();
if (!pCaption->empty() && m_iBufferPos < (int)pCaption->length())
{
// Delete the word to the right of the cursor
m_iBufferPos_Tail = m_iBufferPos;
// Delete chars to the right unit we hit whitespace
while (++m_iBufferPos < (int)pCaption->length())
{
if (iswspace((*pCaption)[m_iBufferPos]) || iswpunct((*pCaption)[m_iBufferPos]))
break;
}
// Eliminate any whitespace behind the word we just deleted
while (m_iBufferPos < (int)pCaption->length())
{
if (!iswspace((*pCaption)[m_iBufferPos]))
break;
++m_iBufferPos;
}
UpdateBufferPositionSetting();
DeleteCurSelection();
}
UpdateAutoScroll();
SendEvent(GUIM_TEXTEDIT, "textedit");
return IN_HANDLED;
}
else if (hotkey == "text.move.left")
{
m_WantedX = 0.0f;
if (shiftKeyPressed || !SelectingText())
{
if (!shiftKeyPressed)
m_iBufferPos_Tail = -1;
else if (!SelectingText())
m_iBufferPos_Tail = m_iBufferPos;
if (!pCaption->empty() && m_iBufferPos != 0)
{
CStrW searchString = pCaption->Left(m_iBufferPos);
// If we are starting in whitespace, adjust position until we get a non whitespace
while (m_iBufferPos > 0)
{
if (!iswspace(searchString[m_iBufferPos - 1]))
break;
m_iBufferPos--;
}
// If we end up on a puctuation char we just select it (treat punct like a word)
if (iswpunct(searchString[m_iBufferPos - 1]))
m_iBufferPos--;
else
{
// Now we are on a non white space character, adjust position to char after next whitespace char is found
while (m_iBufferPos > 0)
{
if (iswspace(searchString[m_iBufferPos - 1]) || iswpunct(searchString[m_iBufferPos - 1]))
break;
m_iBufferPos--;
}
}
}
}
else
{
if (m_iBufferPos_Tail < m_iBufferPos)
m_iBufferPos = m_iBufferPos_Tail;
m_iBufferPos_Tail = -1;
}
UpdateBufferPositionSetting();
UpdateAutoScroll();
return IN_HANDLED;
}
else if (hotkey == "text.move.right")
{
m_WantedX = 0.0f;
if (shiftKeyPressed || !SelectingText())
{
if (!shiftKeyPressed)
m_iBufferPos_Tail = -1;
else if (!SelectingText())
m_iBufferPos_Tail = m_iBufferPos;
if (!pCaption->empty() && m_iBufferPos < (int)pCaption->length())
{
// Select chars to the right until we hit whitespace
while (++m_iBufferPos < (int)pCaption->length())
{
if (iswspace((*pCaption)[m_iBufferPos]) || iswpunct((*pCaption)[m_iBufferPos]))
break;
}
// Also select any whitespace following the word we just selected
while (m_iBufferPos < (int)pCaption->length())
{
if (!iswspace((*pCaption)[m_iBufferPos]))
break;
++m_iBufferPos;
}
}
}
else
{
if (m_iBufferPos_Tail > m_iBufferPos)
m_iBufferPos = m_iBufferPos_Tail;
m_iBufferPos_Tail = -1;
}
UpdateBufferPositionSetting();
UpdateAutoScroll();
return IN_HANDLED;
}
return IN_PASS;
}
void CInput::HandleMessage(SGUIMessage& Message)
{
IGUIScrollBarOwner::HandleMessage(Message);
switch (Message.type)
{
case GUIM_SETTINGS_UPDATED:
{
bool scrollbar;
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
// Update scroll-bar
// TODO Gee: (2004-09-01) Is this really updated each time it should?
if (scrollbar &&
(Message.value == CStr("size") ||
Message.value == CStr("z") ||
Message.value == CStr("absolute")))
{
GetScrollBar(0).SetX(m_CachedActualSize.right);
GetScrollBar(0).SetY(m_CachedActualSize.top);
GetScrollBar(0).SetZ(GetBufferedZ());
GetScrollBar(0).SetLength(m_CachedActualSize.bottom - m_CachedActualSize.top);
}
// Update scrollbar
if (Message.value == CStr("scrollbar_style"))
{
CStr scrollbar_style;
GUI<CStr>::GetSetting(this, Message.value, scrollbar_style);
GetScrollBar(0).SetScrollBarStyle(scrollbar_style);
}
if (Message.value == CStr("buffer_position"))
{
GUI<int>::GetSetting(this, Message.value, m_iBufferPos);
m_iBufferPos_Tail = -1; // position change resets selection
}
if (Message.value == CStr("size") ||
Message.value == CStr("z") ||
Message.value == CStr("font") ||
Message.value == CStr("absolute") ||
Message.value == CStr("caption") ||
Message.value == CStr("scrollbar") ||
Message.value == CStr("scrollbar_style"))
{
UpdateText();
}
if (Message.value == CStr("multiline"))
{
bool multiline;
GUI<bool>::GetSetting(this, "multiline", multiline);
if (!multiline)
GetScrollBar(0).SetLength(0.f);
else
GetScrollBar(0).SetLength(m_CachedActualSize.bottom - m_CachedActualSize.top);
UpdateText();
}
UpdateAutoScroll();
if (Message.value == CStr("readonly"))
GUI<bool>::GetSetting(this, "readonly", m_Readonly);
break;
}
case GUIM_MOUSE_PRESS_LEFT:
{
bool scrollbar, multiline;
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
GUI<bool>::GetSetting(this, "multiline", multiline);
// Check if we're selecting the scrollbar
if (GetScrollBar(0).GetStyle() && multiline)
{
if (GetMousePos().x > m_CachedActualSize.right - GetScrollBar(0).GetStyle()->m_Width)
break;
}
if (m_ComposingText)
break;
// Okay, this section is about pressing the mouse and
// choosing where the point should be placed. For
// instance, if we press between a and b, the point
// should of course be placed accordingly. Other
// special cases are handled like the input box norms.
if (g_keys[SDLK_RSHIFT] || g_keys[SDLK_LSHIFT])
m_iBufferPos = GetMouseHoveringTextPosition();
else
m_iBufferPos = m_iBufferPos_Tail = GetMouseHoveringTextPosition();
m_SelectingText = true;
UpdateAutoScroll();
// If we immediately release the button it will just be seen as a click
// for the user though.
break;
}
case GUIM_MOUSE_DBLCLICK_LEFT:
{
if (m_ComposingText)
break;
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
if (pCaption->empty())
break;
m_iBufferPos = m_iBufferPos_Tail = GetMouseHoveringTextPosition();
if (m_iBufferPos >= (int)pCaption->length())
m_iBufferPos = m_iBufferPos_Tail = pCaption->length() - 1;
// See if we are clicking over whitespace
if (iswspace((*pCaption)[m_iBufferPos]))
{
// see if we are in a section of whitespace greater than one character
if ((m_iBufferPos + 1 < (int) pCaption->length() && iswspace((*pCaption)[m_iBufferPos + 1])) ||
(m_iBufferPos - 1 > 0 && iswspace((*pCaption)[m_iBufferPos - 1])))
{
//
// We are clicking in an area with more than one whitespace character
// so we select both the word to the left and then the word to the right
//
// [1] First the left
// skip the whitespace
while (m_iBufferPos > 0)
{
if (!iswspace((*pCaption)[m_iBufferPos - 1]))
break;
m_iBufferPos--;
}
// now go until we hit white space or punctuation
while (m_iBufferPos > 0)
{
if (iswspace((*pCaption)[m_iBufferPos - 1]))
break;
m_iBufferPos--;
if (iswpunct((*pCaption)[m_iBufferPos]))
break;
}
// [2] Then the right
// go right until we are not in whitespace
while (++m_iBufferPos_Tail < (int)pCaption->length())
{
if (!iswspace((*pCaption)[m_iBufferPos_Tail]))
break;
}
if (m_iBufferPos_Tail == (int)pCaption->length())
break;
// now go to the right until we hit whitespace or punctuation
while (++m_iBufferPos_Tail < (int)pCaption->length())
{
if (iswspace((*pCaption)[m_iBufferPos_Tail]) || iswpunct((*pCaption)[m_iBufferPos_Tail]))
break;
}
}
else
{
// single whitespace so select word to the right
while (++m_iBufferPos_Tail < (int)pCaption->length())
{
if (!iswspace((*pCaption)[m_iBufferPos_Tail]))
break;
}
if (m_iBufferPos_Tail == (int)pCaption->length())
break;
// Don't include the leading whitespace
m_iBufferPos = m_iBufferPos_Tail;
// now go to the right until we hit whitespace or punctuation
while (++m_iBufferPos_Tail < (int)pCaption->length())
{
if (iswspace((*pCaption)[m_iBufferPos_Tail]) || iswpunct((*pCaption)[m_iBufferPos_Tail]))
break;
}
}
}
else
{
// clicked on non-whitespace so select current word
// go until we hit white space or punctuation
while (m_iBufferPos > 0)
{
if (iswspace((*pCaption)[m_iBufferPos - 1]))
break;
m_iBufferPos--;
if (iswpunct((*pCaption)[m_iBufferPos]))
break;
}
// go to the right until we hit whitespace or punctuation
while (++m_iBufferPos_Tail < (int)pCaption->length())
if (iswspace((*pCaption)[m_iBufferPos_Tail]) || iswpunct((*pCaption)[m_iBufferPos_Tail]))
break;
}
UpdateAutoScroll();
break;
}
case GUIM_MOUSE_RELEASE_LEFT:
{
if (m_SelectingText)
m_SelectingText = false;
break;
}
case GUIM_MOUSE_MOTION:
{
// If we just pressed down and started to move before releasing
// this is one way of selecting larger portions of text.
if (m_SelectingText)
{
// Actually, first we need to re-check that the mouse button is
// really pressed (it can be released while outside the control.
if (!g_mouse_buttons[SDL_BUTTON_LEFT])
m_SelectingText = false;
else
m_iBufferPos = GetMouseHoveringTextPosition();
UpdateAutoScroll();
}
break;
}
case GUIM_LOAD:
{
GetScrollBar(0).SetX(m_CachedActualSize.right);
GetScrollBar(0).SetY(m_CachedActualSize.top);
GetScrollBar(0).SetZ(GetBufferedZ());
GetScrollBar(0).SetLength(m_CachedActualSize.bottom - m_CachedActualSize.top);
CStr scrollbar_style;
GUI<CStr>::GetSetting(this, "scrollbar_style", scrollbar_style);
GetScrollBar(0).SetScrollBarStyle(scrollbar_style);
UpdateText();
UpdateAutoScroll();
GUI<bool>::GetSetting(this, "readonly", m_Readonly);
break;
}
case GUIM_GOT_FOCUS:
{
m_iBufferPos = 0;
m_PrevTime = 0.0;
m_CursorVisState = false;
// Tell the IME where to draw the candidate list
SDL_Rect rect;
rect.h = m_CachedActualSize.GetSize().cy;
rect.w = m_CachedActualSize.GetSize().cx;
rect.x = m_CachedActualSize.TopLeft().x;
rect.y = m_CachedActualSize.TopLeft().y;
SDL_SetTextInputRect(&rect);
SDL_StartTextInput();
break;
}
case GUIM_LOST_FOCUS:
{
if (m_ComposingText)
{
// Simulate a final text editing event to clear the composition
SDL_Event_ evt;
evt.ev.type = SDL_TEXTEDITING;
evt.ev.edit.length = 0;
evt.ev.edit.start = 0;
evt.ev.edit.text[0] = 0;
ManuallyHandleEvent(&evt);
}
SDL_StopTextInput();
m_iBufferPos = -1;
m_iBufferPos_Tail = -1;
break;
}
default:
{
break;
}
}
UpdateBufferPositionSetting();
}
void CInput::UpdateCachedSize()
{
// If an ancestor's size changed, this will let us intercept the change and
// update our scrollbar positions
IGUIObject::UpdateCachedSize();
bool scrollbar;
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
if (scrollbar)
{
GetScrollBar(0).SetX(m_CachedActualSize.right);
GetScrollBar(0).SetY(m_CachedActualSize.top);
GetScrollBar(0).SetZ(GetBufferedZ());
GetScrollBar(0).SetLength(m_CachedActualSize.bottom - m_CachedActualSize.top);
}
}
void CInput::Draw()
{
float bz = GetBufferedZ();
if (m_CursorBlinkRate > 0.0)
{
// check if the cursor visibility state needs to be changed
double currTime = timer_Time();
if (currTime - m_PrevTime >= m_CursorBlinkRate)
{
m_CursorVisState = !m_CursorVisState;
m_PrevTime = currTime;
}
}
else
// should always be visible
m_CursorVisState = true;
// First call draw on ScrollBarOwner
bool scrollbar;
float buffer_zone;
bool multiline;
bool mask;
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
GUI<float>::GetSetting(this, "buffer_zone", buffer_zone);
GUI<bool>::GetSetting(this, "multiline", multiline);
GUI<bool>::GetSetting(this, "mask", mask);
if (scrollbar && multiline)
IGUIScrollBarOwner::Draw();
if (!GetGUI())
return;
CStrW font_name_w;
CColor color, color_selected;
GUI<CStrW>::GetSetting(this, "font", font_name_w);
GUI<CColor>::GetSetting(this, "textcolor", color);
GUI<CColor>::GetSetting(this, "textcolor_selected", color_selected);
CStrIntern font_name(font_name_w.ToUTF8());
// Get pointer of caption, it might be very large, and we don't
// want to copy it continuously.
CStrW* pCaption = NULL;
wchar_t mask_char = L'*';
if (mask)
{
CStrW maskStr;
GUI<CStrW>::GetSetting(this, "mask_char", maskStr);
if (maskStr.length() > 0)
mask_char = maskStr[0];
}
else
pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
CGUISpriteInstance* sprite = NULL;
CGUISpriteInstance* sprite_selectarea = NULL;
int cell_id;
GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite", sprite);
GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite_selectarea", sprite_selectarea);
GUI<int>::GetSetting(this, "cell_id", cell_id);
GetGUI()->DrawSprite(*sprite, cell_id, bz, m_CachedActualSize);
float scroll = 0.f;
if (scrollbar && multiline)
scroll = GetScrollBar(0).GetPos();
CFontMetrics font(font_name);
// We'll have to setup clipping manually, since we're doing the rendering manually.
CRect cliparea(m_CachedActualSize);
// First we'll figure out the clipping area, which is the cached actual size
// substracted by an optional scrollbar
if (scrollbar)
{
scroll = GetScrollBar(0).GetPos();
// substract scrollbar from cliparea
if (cliparea.right > GetScrollBar(0).GetOuterRect().left &&
cliparea.right <= GetScrollBar(0).GetOuterRect().right)
cliparea.right = GetScrollBar(0).GetOuterRect().left;
if (cliparea.left >= GetScrollBar(0).GetOuterRect().left &&
cliparea.left < GetScrollBar(0).GetOuterRect().right)
cliparea.left = GetScrollBar(0).GetOuterRect().right;
}
if (cliparea != CRect())
{
glEnable(GL_SCISSOR_TEST);
glScissor(
cliparea.left * g_GuiScale,
g_yres - cliparea.bottom * g_GuiScale,
cliparea.GetWidth() * g_GuiScale,
cliparea.GetHeight() * g_GuiScale);
}
// These are useful later.
int VirtualFrom, VirtualTo;
if (m_iBufferPos_Tail >= m_iBufferPos)
{
VirtualFrom = m_iBufferPos;
VirtualTo = m_iBufferPos_Tail;
}
else
{
VirtualFrom = m_iBufferPos_Tail;
VirtualTo = m_iBufferPos;
}
// Get the height of this font.
float h = (float)font.GetHeight();
float ls = (float)font.GetLineSpacing();
CShaderTechniquePtr tech = g_Renderer.GetShaderManager().LoadEffect(str_gui_text);
CTextRenderer textRenderer(tech->GetShader());
textRenderer.Font(font_name);
// Set the Z to somewhat more, so we can draw a selected area between the
// the control and the text.
textRenderer.Translate(
(float)(int)(m_CachedActualSize.left) + buffer_zone,
(float)(int)(m_CachedActualSize.top+h) + buffer_zone,
bz+0.1f);
// U+FE33: PRESENTATION FORM FOR VERTICAL LOW LINE
// (sort of like a | which is aligned to the left of most characters)
float buffered_y = -scroll+buffer_zone;
// When selecting larger areas, we need to draw a rectangle box
// around it, and this is to keep track of where the box
// started, because we need to follow the iteration until we
// reach the end, before we can actually draw it.
bool drawing_box = false;
float box_x = 0.f;
float x_pointer = 0.f;
// If we have a selecting box (i.e. when you have selected letters, not just when
// the pointer is between two letters) we need to process all letters once
// before we do it the second time and render all the text. We can't do it
// in the same loop because text will have been drawn, so it will disappear when
// drawn behind the text that has already been drawn. Confusing, well it's necessary
// (I think).
if (SelectingText())
{
// Now m_iBufferPos_Tail can be of both sides of m_iBufferPos,
// just like you can select from right to left, as you can
// left to right. Is there a difference? Yes, the pointer
// be placed accordingly, so that if you select shift and
// expand this selection, it will expand on appropriate side.
// Anyway, since the drawing procedure needs "To" to be
// greater than from, we need virtual values that might switch
// place.
int VirtualFrom, VirtualTo;
if (m_iBufferPos_Tail >= m_iBufferPos)
{
VirtualFrom = m_iBufferPos;
VirtualTo = m_iBufferPos_Tail;
}
else
{
VirtualFrom = m_iBufferPos_Tail;
VirtualTo = m_iBufferPos;
}
bool done = false;
for (std::list<SRow>::const_iterator it = m_CharacterPositions.begin();
it != m_CharacterPositions.end();
++it, buffered_y += ls, x_pointer = 0.f)
{
if (multiline && buffered_y > m_CachedActualSize.GetHeight())
break;
// We might as well use 'i' here to iterate, because we need it
// (often compared against ints, so don't make it size_t)
for (int i = 0; i < (int)it->m_ListOfX.size()+2; ++i)
{
if (it->m_ListStart + i == VirtualFrom)
{
// we won't actually draw it now, because we don't
// know the width of each glyph to that position.
// we need to go along with the iteration, and
// make a mark where the box started:
drawing_box = true; // will turn false when finally rendered.
// Get current x position
box_x = x_pointer;
}
const bool at_end = (i == (int)it->m_ListOfX.size()+1);
if (drawing_box && (it->m_ListStart + i == VirtualTo || at_end))
{
// Depending on if it's just a row change, or if it's
// the end of the select box, do slightly different things.
if (at_end)
{
if (it->m_ListStart + i != VirtualFrom)
// and actually add a white space! yes, this is done in any common input
x_pointer += (float)font.GetCharacterWidth(L' ');
}
else
{
drawing_box = false;
done = true;
}
CRect rect;
// Set 'rect' depending on if it's a multiline control, or a one-line control
if (multiline)
{
rect = CRect(
m_CachedActualSize.left + box_x + buffer_zone,
m_CachedActualSize.top + buffered_y + (h - ls) / 2,
m_CachedActualSize.left + x_pointer + buffer_zone,
m_CachedActualSize.top + buffered_y + (h + ls) / 2);
if (rect.bottom < m_CachedActualSize.top)
continue;
if (rect.top < m_CachedActualSize.top)
rect.top = m_CachedActualSize.top;
if (rect.bottom > m_CachedActualSize.bottom)
rect.bottom = m_CachedActualSize.bottom;
}
else // if one-line
{
rect = CRect(
m_CachedActualSize.left + box_x + buffer_zone - m_HorizontalScroll,
m_CachedActualSize.top + buffered_y + (h - ls) / 2,
m_CachedActualSize.left + x_pointer + buffer_zone - m_HorizontalScroll,
m_CachedActualSize.top + buffered_y + (h + ls) / 2);
if (rect.left < m_CachedActualSize.left)
rect.left = m_CachedActualSize.left;
if (rect.right > m_CachedActualSize.right)
rect.right = m_CachedActualSize.right;
}
if (sprite_selectarea)
GetGUI()->DrawSprite(*sprite_selectarea, cell_id, bz+0.05f, rect);
}
if (i < (int)it->m_ListOfX.size())
{
if (!mask)
x_pointer += (float)font.GetCharacterWidth((*pCaption)[it->m_ListStart + i]);
else
x_pointer += (float)font.GetCharacterWidth(mask_char);
}
}
if (done)
break;
// If we're about to draw a box, and all of a sudden changes
// line, we need to draw that line's box, and then reset
// the box drawing to the beginning of the new line.
if (drawing_box)
box_x = 0.f;
}
}
// Reset some from previous run
buffered_y = -scroll;
// Setup initial color (then it might change and change back, when drawing selected area)
textRenderer.Color(color);
tech->BeginPass();
bool using_selected_color = false;
for (std::list<SRow>::const_iterator it = m_CharacterPositions.begin();
it != m_CharacterPositions.end();
++it, buffered_y += ls)
{
if (buffered_y + buffer_zone >= -ls || !multiline)
{
if (multiline && buffered_y + buffer_zone > m_CachedActualSize.GetHeight())
break;
CMatrix3D savedTransform = textRenderer.GetTransform();
// Text must always be drawn in integer values. So we have to convert scroll
if (multiline)
textRenderer.Translate(0.f, -(float)(int)scroll, 0.f);
else
textRenderer.Translate(-(float)(int)m_HorizontalScroll, 0.f, 0.f);
// We might as well use 'i' here, because we need it
// (often compared against ints, so don't make it size_t)
for (int i = 0; i < (int)it->m_ListOfX.size()+1; ++i)
{
if (!multiline && i < (int)it->m_ListOfX.size())
{
if (it->m_ListOfX[i] - m_HorizontalScroll < -buffer_zone)
{
// We still need to translate the OpenGL matrix
if (i == 0)
textRenderer.Translate(it->m_ListOfX[i], 0.f, 0.f);
else
textRenderer.Translate(it->m_ListOfX[i] - it->m_ListOfX[i-1], 0.f, 0.f);
continue;
}
}
// End of selected area, change back color
if (SelectingText() && it->m_ListStart + i == VirtualTo)
{
using_selected_color = false;
textRenderer.Color(color);
}
// selecting only one, then we need only to draw a cursor.
if (i != (int)it->m_ListOfX.size() && it->m_ListStart + i == m_iBufferPos && m_CursorVisState)
textRenderer.Put(0.0f, 0.0f, L"_");
// Drawing selected area
if (SelectingText() &&
it->m_ListStart + i >= VirtualFrom &&
it->m_ListStart + i < VirtualTo &&
!using_selected_color)
{
using_selected_color = true;
textRenderer.Color(color_selected);
}
if (i != (int)it->m_ListOfX.size())
{
if (!mask)
textRenderer.PrintfAdvance(L"%lc", (*pCaption)[it->m_ListStart + i]);
else
textRenderer.PrintfAdvance(L"%lc", mask_char);
}
// check it's now outside a one-liner, then we'll break
if (!multiline && i < (int)it->m_ListOfX.size() &&
it->m_ListOfX[i] - m_HorizontalScroll > m_CachedActualSize.GetWidth() - buffer_zone)
break;
}
if (it->m_ListStart + (int)it->m_ListOfX.size() == m_iBufferPos)
{
textRenderer.Color(color);
if (m_CursorVisState)
textRenderer.PutAdvance(L"_");
if (using_selected_color)
textRenderer.Color(color_selected);
}
textRenderer.SetTransform(savedTransform);
}
textRenderer.Translate(0.f, ls, 0.f);
}
textRenderer.Render();
if (cliparea != CRect())
glDisable(GL_SCISSOR_TEST);
tech->EndPass();
}
void CInput::UpdateText(int from, int to_before, int to_after)
{
CStrW caption;
CStrW font_name_w;
float buffer_zone;
bool multiline;
bool mask;
GUI<CStrW>::GetSetting(this, "font", font_name_w);
GUI<CStrW>::GetSetting(this, "caption", caption);
GUI<float>::GetSetting(this, "buffer_zone", buffer_zone);
GUI<bool>::GetSetting(this, "multiline", multiline);
GUI<bool>::GetSetting(this, "mask", mask);
CStrIntern font_name(font_name_w.ToUTF8());
wchar_t mask_char = L'*';
if (mask)
{
CStrW maskStr;
GUI<CStrW>::GetSetting(this, "mask_char", maskStr);
if (maskStr.length() > 0)
mask_char = maskStr[0];
}
// Ensure positions are valid after caption changes
m_iBufferPos = std::min(m_iBufferPos, (int)caption.size());
m_iBufferPos_Tail = std::min(m_iBufferPos_Tail, (int)caption.size());
UpdateBufferPositionSetting();
if (font_name.empty())
{
// Destroy everything stored, there's no font, so there can be no data.
m_CharacterPositions.clear();
return;
}
SRow row;
row.m_ListStart = 0;
int to = 0; // make sure it's initialized
if (to_before == -1)
to = (int)caption.length();
CFontMetrics font(font_name);
std::list<SRow>::iterator current_line;
// Used to ... TODO
int check_point_row_start = -1;
int check_point_row_end = -1;
// Reset
if (from == 0 && to_before == -1)
{
m_CharacterPositions.clear();
current_line = m_CharacterPositions.begin();
}
else
{
ENSURE(to_before != -1);
std::list<SRow>::iterator destroy_row_from;
std::list<SRow>::iterator destroy_row_to;
// Used to check if the above has been set to anything,
// previously a comparison like:
// destroy_row_from == std::list<SRow>::iterator()
// ... was used, but it didn't work with GCC.
bool destroy_row_from_used = false;
bool destroy_row_to_used = false;
// Iterate, and remove everything between 'from' and 'to_before'
// actually remove the entire lines they are on, it'll all have
// to be redone. And when going along, we'll delete a row at a time
// when continuing to see how much more after 'to' we need to remake.
int i = 0;
for (std::list<SRow>::iterator it = m_CharacterPositions.begin();
it != m_CharacterPositions.end();
++it, ++i)
{
if (!destroy_row_from_used && it->m_ListStart > from)
{
// Destroy the previous line, and all to 'to_before'
destroy_row_from = it;
--destroy_row_from;
destroy_row_from_used = true;
// For the rare case that we might remove characters to a word
// so that it suddenly fits on the previous row,
// we need to by standards re-do the whole previous line too
// (if one exists)
if (destroy_row_from != m_CharacterPositions.begin())
--destroy_row_from;
}
if (!destroy_row_to_used && it->m_ListStart > to_before)
{
destroy_row_to = it;
destroy_row_to_used = true;
// If it isn't the last row, we'll add another row to delete,
// just so we can see if the last restorted line is
// identical to what it was before. If it isn't, then we'll
// have to continue.
// 'check_point_row_start' is where we store how the that
// line looked.
if (destroy_row_to != m_CharacterPositions.end())
{
check_point_row_start = destroy_row_to->m_ListStart;
check_point_row_end = check_point_row_start + (int)destroy_row_to->m_ListOfX.size();
if (destroy_row_to->m_ListOfX.empty())
++check_point_row_end;
}
++destroy_row_to;
break;
}
}
if (!destroy_row_from_used)
{
destroy_row_from = m_CharacterPositions.end();
--destroy_row_from;
// As usual, let's destroy another row back
if (destroy_row_from != m_CharacterPositions.begin())
--destroy_row_from;
current_line = destroy_row_from;
}
if (!destroy_row_to_used)
{
destroy_row_to = m_CharacterPositions.end();
check_point_row_start = -1;
}
// set 'from' to the row we'll destroy from
// and 'to' to the row we'll destroy to
from = destroy_row_from->m_ListStart;
if (destroy_row_to != m_CharacterPositions.end())
to = destroy_row_to->m_ListStart; // notice it will iterate [from, to), so it will never reach to.
else
to = (int)caption.length();
// Setup the first row
row.m_ListStart = destroy_row_from->m_ListStart;
std::list<SRow>::iterator temp_it = destroy_row_to;
--temp_it;
current_line = m_CharacterPositions.erase(destroy_row_from, destroy_row_to);
// If there has been a change in number of characters
// we need to change all m_ListStart that comes after
// the interval we just destroyed. We'll change all
// values with the delta change of the string length.
int delta = to_after - to_before;
if (delta != 0)
{
for (std::list<SRow>::iterator it = current_line;
it != m_CharacterPositions.end();
++it)
it->m_ListStart += delta;
// Update our check point too!
check_point_row_start += delta;
check_point_row_end += delta;
if (to != (int)caption.length())
to += delta;
}
}
int last_word_started = from;
float x_pos = 0.f;
//if (to_before != -1)
// return;
for (int i = from; i < to; ++i)
{
if (caption[i] == L'\n' && multiline)
{
if (i == to-1 && to != (int)caption.length())
break; // it will be added outside
current_line = m_CharacterPositions.insert(current_line, row);
++current_line;
// Setup the next row:
row.m_ListOfX.clear();
row.m_ListStart = i+1;
x_pos = 0.f;
}
else
{
if (caption[i] == L' '/* || TODO Gee (2004-10-13): the '-' disappears, fix.
caption[i] == L'-'*/)
last_word_started = i+1;
if (!mask)
x_pos += (float)font.GetCharacterWidth(caption[i]);
else
x_pos += (float)font.GetCharacterWidth(mask_char);
if (x_pos >= GetTextAreaWidth() && multiline)
{
// The following decides whether it will word-wrap a word,
// or if it's only one word on the line, where it has to
// break the word apart.
if (last_word_started == row.m_ListStart)
{
last_word_started = i;
row.m_ListOfX.resize(row.m_ListOfX.size() - (i-last_word_started));
//row.m_ListOfX.push_back(x_pos);
//continue;
}
else
{
// regular word-wrap
row.m_ListOfX.resize(row.m_ListOfX.size() - (i-last_word_started+1));
}
// Now, create a new line:
// notice: when we enter a newline, you can stand with the cursor
// both before and after that character, being on different
// rows. With automatic word-wrapping, that is not possible. Which
// is intuitively correct.
current_line = m_CharacterPositions.insert(current_line, row);
++current_line;
// Setup the next row:
row.m_ListOfX.clear();
row.m_ListStart = last_word_started;
i = last_word_started-1;
x_pos = 0.f;
}
else
// Get width of this character:
row.m_ListOfX.push_back(x_pos);
}
// Check if it's the last iteration, and we're not revising the whole string
// because in that case, more word-wrapping might be needed.
// also check if the current line isn't the end
if (to_before != -1 && i == to-1 && current_line != m_CharacterPositions.end())
{
// check all rows and see if any existing
if (row.m_ListStart != check_point_row_start)
{
std::list<SRow>::iterator destroy_row_from;
std::list<SRow>::iterator destroy_row_to;
// Are used to check if the above has been set to anything,
// previously a comparison like:
// destroy_row_from == std::list<SRow>::iterator()
// was used, but it didn't work with GCC.
bool destroy_row_from_used = false;
bool destroy_row_to_used = false;
// Iterate, and remove everything between 'from' and 'to_before'
// actually remove the entire lines they are on, it'll all have
// to be redone. And when going along, we'll delete a row at a time
// when continuing to see how much more after 'to' we need to remake.
int i = 0;
for (std::list<SRow>::iterator it = m_CharacterPositions.begin();
it != m_CharacterPositions.end();
++it, ++i)
{
if (!destroy_row_from_used && it->m_ListStart > check_point_row_start)
{
// Destroy the previous line, and all to 'to_before'
//if (i >= 2)
// destroy_row_from = it-2;
//else
// destroy_row_from = it-1;
destroy_row_from = it;
destroy_row_from_used = true;
//--destroy_row_from;
}
if (!destroy_row_to_used && it->m_ListStart > check_point_row_end)
{
destroy_row_to = it;
destroy_row_to_used = true;
// If it isn't the last row, we'll add another row to delete,
// just so we can see if the last restorted line is
// identical to what it was before. If it isn't, then we'll
// have to continue.
// 'check_point_row_start' is where we store how the that
// line looked.
if (destroy_row_to != m_CharacterPositions.end())
{
check_point_row_start = destroy_row_to->m_ListStart;
check_point_row_end = check_point_row_start + (int)destroy_row_to->m_ListOfX.size();
if (destroy_row_to->m_ListOfX.empty())
++check_point_row_end;
}
else
check_point_row_start = check_point_row_end = -1;
++destroy_row_to;
break;
}
}
if (!destroy_row_from_used)
{
destroy_row_from = m_CharacterPositions.end();
--destroy_row_from;
current_line = destroy_row_from;
}
if (!destroy_row_to_used)
{
destroy_row_to = m_CharacterPositions.end();
check_point_row_start = check_point_row_end = -1;
}
if (destroy_row_to != m_CharacterPositions.end())
to = destroy_row_to->m_ListStart; // notice it will iterate [from, to[, so it will never reach to.
else
to = (int)caption.length();
// Set current line, new rows will be added before current_line, so
// we'll choose the destroy_row_to, because it won't be deleted
// in the coming erase.
current_line = destroy_row_to;
m_CharacterPositions.erase(destroy_row_from, destroy_row_to);
}
// else, the for loop will end naturally.
}
}
// This is kind of special, when we renew a some lines, then the last
// one will sometimes end with a space (' '), that really should
// be omitted when word-wrapping. So we'll check if the last row
// we'll add has got the same value as the next row.
if (current_line != m_CharacterPositions.end())
{
if (row.m_ListStart + (int)row.m_ListOfX.size() == current_line->m_ListStart)
row.m_ListOfX.resize(row.m_ListOfX.size()-1);
}
// add the final row (even if empty)
m_CharacterPositions.insert(current_line, row);
bool scrollbar;
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
if (scrollbar)
{
GetScrollBar(0).SetScrollRange(m_CharacterPositions.size() * font.GetLineSpacing() + buffer_zone*2.f);
GetScrollBar(0).SetScrollSpace(m_CachedActualSize.GetHeight());
}
}
int CInput::GetMouseHoveringTextPosition() const
{
if (m_CharacterPositions.empty())
return 0;
// Return position
int retPosition;
float buffer_zone;
bool multiline;
GUI<float>::GetSetting(this, "buffer_zone", buffer_zone);
GUI<bool>::GetSetting(this, "multiline", multiline);
std::list<SRow>::const_iterator current = m_CharacterPositions.begin();
CPos mouse = GetMousePos();
if (multiline)
{
CStrW font_name_w;
bool scrollbar;
GUI<CStrW>::GetSetting(this, "font", font_name_w);
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
CStrIntern font_name(font_name_w.ToUTF8());
float scroll = 0.f;
if (scrollbar)
scroll = GetScrollBarPos(0);
// Now get the height of the font.
// TODO: Get the real font
CFontMetrics font(font_name);
float spacing = (float)font.GetLineSpacing();
// Change mouse position relative to text.
mouse -= m_CachedActualSize.TopLeft();
mouse.x -= buffer_zone;
mouse.y += scroll - buffer_zone;
int row = (int)((mouse.y) / spacing);
if (row < 0)
row = 0;
if (row > (int)m_CharacterPositions.size()-1)
row = (int)m_CharacterPositions.size()-1;
// TODO Gee (2004-11-21): Okay, I need a 'std::list' for some reasons, but I would really like to
// be able to get the specific element here. This is hopefully a temporary hack.
for (int i = 0; i < row; ++i)
++current;
}
else
{
// current is already set to begin,
// but we'll change the mouse.x to fit our horizontal scrolling
mouse -= m_CachedActualSize.TopLeft();
mouse.x -= buffer_zone - m_HorizontalScroll;
// mouse.y is moot
}
retPosition = current->m_ListStart;
// Okay, now loop through the glyphs to find the appropriate X position
float dummy;
retPosition += GetXTextPosition(current, mouse.x, dummy);
return retPosition;
}
// Does not process horizontal scrolling, 'x' must be modified before inputted.
int CInput::GetXTextPosition(const std::list<SRow>::const_iterator& current, const float& x, float& wanted) const
{
int ret = 0;
float previous = 0.f;
int i = 0;
for (std::vector<float>::const_iterator it = current->m_ListOfX.begin();
it != current->m_ListOfX.end();
++it, ++i)
{
if (*it >= x)
{
if (x - previous >= *it - x)
ret += i+1;
else
ret += i;
break;
}
previous = *it;
}
// If a position wasn't found, we will assume the last
// character of that line.
if (i == (int)current->m_ListOfX.size())
{
ret += i;
wanted = x;
}
else
wanted = 0.f;
return ret;
}
void CInput::DeleteCurSelection()
{
CStrW* pCaption = (CStrW*)m_Settings["caption"].m_pSetting;
int virtualFrom;
int virtualTo;
if (m_iBufferPos_Tail >= m_iBufferPos)
{
virtualFrom = m_iBufferPos;
virtualTo = m_iBufferPos_Tail;
}
else
{
virtualFrom = m_iBufferPos_Tail;
virtualTo = m_iBufferPos;
}
*pCaption = pCaption->Left(virtualFrom) +
pCaption->Right((long)pCaption->length() - virtualTo);
UpdateText(virtualFrom, virtualTo, virtualFrom);
// Remove selection
m_iBufferPos_Tail = -1;
m_iBufferPos = virtualFrom;
UpdateBufferPositionSetting();
}
bool CInput::SelectingText() const
{
return m_iBufferPos_Tail != -1 &&
m_iBufferPos_Tail != m_iBufferPos;
}
float CInput::GetTextAreaWidth()
{
bool scrollbar;
float buffer_zone;
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
GUI<float>::GetSetting(this, "buffer_zone", buffer_zone);
if (scrollbar && GetScrollBar(0).GetStyle())
return m_CachedActualSize.GetWidth() - buffer_zone*2.f - GetScrollBar(0).GetStyle()->m_Width;
else
return m_CachedActualSize.GetWidth() - buffer_zone*2.f;
}
void CInput::UpdateAutoScroll()
{
float buffer_zone;
bool multiline;
GUI<float>::GetSetting(this, "buffer_zone", buffer_zone);
GUI<bool>::GetSetting(this, "multiline", multiline);
// Autoscrolling up and down
if (multiline)
{
CStrW font_name_w;
bool scrollbar;
GUI<CStrW>::GetSetting(this, "font", font_name_w);
GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
CStrIntern font_name(font_name_w.ToUTF8());
float scroll = 0.f;
if (!scrollbar)
return;
scroll = GetScrollBar(0).GetPos();
// Now get the height of the font.
// TODO: Get the real font
CFontMetrics font(font_name);
float spacing = (float)font.GetLineSpacing();
//float height = font.GetHeight();
// TODO Gee (2004-11-21): Okay, I need a 'std::list' for some reasons, but I would really like to
// be able to get the specific element here. This is hopefully a temporary hack.
std::list<SRow>::iterator current = m_CharacterPositions.begin();
int row = 0;
while (current != m_CharacterPositions.end())
{
if (m_iBufferPos >= current->m_ListStart &&
m_iBufferPos <= current->m_ListStart + (int)current->m_ListOfX.size())
break;
++current;
++row;
}
// If scrolling down
if (-scroll + (float)(row+1) * spacing + buffer_zone*2.f > m_CachedActualSize.GetHeight())
{
// Scroll so the selected row is shown completely, also with buffer_zone length to the edge.
GetScrollBar(0).SetPos((float)(row+1) * spacing - m_CachedActualSize.GetHeight() + buffer_zone*2.f);
}
// If scrolling up
else if (-scroll + (float)row * spacing < 0.f)
{
// Scroll so the selected row is shown completely, also with buffer_zone length to the edge.
GetScrollBar(0).SetPos((float)row * spacing);
}
}
else // autoscrolling left and right
{
// Get X position of position:
if (m_CharacterPositions.empty())
return;
float x_position = 0.f;
float x_total = 0.f;
if (!m_CharacterPositions.begin()->m_ListOfX.empty())
{
// Get position of m_iBufferPos
if ((int)m_CharacterPositions.begin()->m_ListOfX.size() >= m_iBufferPos &&
m_iBufferPos > 0)
x_position = m_CharacterPositions.begin()->m_ListOfX[m_iBufferPos-1];
// Get complete length:
x_total = m_CharacterPositions.begin()->m_ListOfX[m_CharacterPositions.begin()->m_ListOfX.size()-1];
}
// Check if outside to the right
if (x_position - m_HorizontalScroll + buffer_zone*2.f > m_CachedActualSize.GetWidth())
m_HorizontalScroll = x_position - m_CachedActualSize.GetWidth() + buffer_zone*2.f;
// Check if outside to the left
if (x_position - m_HorizontalScroll < 0.f)
m_HorizontalScroll = x_position;
// Check if the text doesn't even fill up to the right edge even though scrolling is done.
if (m_HorizontalScroll != 0.f &&
x_total - m_HorizontalScroll + buffer_zone*2.f < m_CachedActualSize.GetWidth())
m_HorizontalScroll = x_total - m_CachedActualSize.GetWidth() + buffer_zone*2.f;
// Now this is the fail-safe, if x_total isn't even the length of the control,
// remove all scrolling
if (x_total + buffer_zone*2.f < m_CachedActualSize.GetWidth())
m_HorizontalScroll = 0.f;
}
}
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