forked from 0ad/0ad
346 lines
8.9 KiB
C++
346 lines
8.9 KiB
C++
/*
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CDropDown
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by Gustav Larsson
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gee@pyro.nu
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*/
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#include "precompiled.h"
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#include "GUI.h"
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#include "CDropDown.h"
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#include "ogl.h"
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using namespace std;
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//-------------------------------------------------------------------
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// Constructor / Destructor
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//-------------------------------------------------------------------
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CDropDown::CDropDown() : m_Open(false), m_HideScrollBar(false), m_ElementHighlight(-1)
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{
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AddSetting(GUIST_float, "button_width");
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AddSetting(GUIST_float, "dropdown_size");
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AddSetting(GUIST_float, "dropdown_buffer");
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// AddSetting(GUIST_CStr, "font");
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// AddSetting(GUIST_CGUISpriteInstance, "sprite"); // Background that sits around the size
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AddSetting(GUIST_CGUISpriteInstance, "sprite_list"); // Background of the drop down list
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AddSetting(GUIST_CGUISpriteInstance, "sprite2"); // Button that sits to the right
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AddSetting(GUIST_CGUISpriteInstance, "sprite2_over");
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AddSetting(GUIST_CGUISpriteInstance, "sprite2_pressed");
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AddSetting(GUIST_CGUISpriteInstance, "sprite2_disabled");
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AddSetting(GUIST_EVAlign, "text_valign");
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// Add these in CList! And implement TODO
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//AddSetting(GUIST_CColor, "textcolor_over");
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//AddSetting(GUIST_CColor, "textcolor_pressed");
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//AddSetting(GUIST_CColor, "textcolor_disabled");
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// Scrollbar is forced to be true.
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GUI<bool>::SetSetting(this, "scrollbar", true);
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}
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CDropDown::~CDropDown()
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{
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}
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void CDropDown::SetupText()
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{
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CList::SetupText();
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SetupListRect();
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}
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void CDropDown::HandleMessage(const SGUIMessage &Message)
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{
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// Important
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switch (Message.type)
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{
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case GUIM_SETTINGS_UPDATED:
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bool scrollbar;
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GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
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// Update scroll-bar
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// TODO Gee: (2004-09-01) Is this really updated each time it should?
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if (scrollbar &&
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(Message.value == CStr("dropdown_size")/* ||
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Message.value == CStr("")*/))
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{
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CRect rect = GetListRect();
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GetScrollBar(0).SetX( rect.right );
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GetScrollBar(0).SetY( rect.top );
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GetScrollBar(0).SetZ( GetBufferedZ() );
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GetScrollBar(0).SetLength( rect.bottom - rect.top );
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}
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// Update cached list rect
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if (Message.value == CStr("size") ||
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Message.value == CStr("absolute") ||
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Message.value == CStr("dropdown_size") ||
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Message.value == CStr("dropdown_buffer") ||
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Message.value == CStr("scrollbar_style") ||
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Message.value == CStr("button_width"))
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{
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SetupListRect();
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}
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break;
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case GUIM_MOUSE_MOTION:{
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if (m_Open)
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{
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CPos mouse = GetMousePos();
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if (GetListRect().PointInside(mouse))
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{
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bool scrollbar;
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CGUIList *pList;
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GUI<bool>::GetSetting(this, "scrollbar", scrollbar);
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GUI<CGUIList>::GetSettingPointer(this, "list", pList);
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float scroll=0.f;
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if (scrollbar)
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{
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scroll = GetScrollBar(0).GetPos();
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}
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CRect rect = GetListRect();
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mouse.y += scroll;
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int set=-1;
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for (int i=0; i<(int)pList->m_Items.size(); ++i)
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{
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if (mouse.y >= rect.top + m_ItemsYPositions[i] &&
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mouse.y < rect.top + m_ItemsYPositions[i+1] &&
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// mouse is not over scroll-bar
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!(mouse.x >= GetScrollBar(0).GetOuterRect().left &&
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mouse.x <= GetScrollBar(0).GetOuterRect().right))
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{
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set = i;
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}
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}
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if (set != -1)
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{
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//GUI<int>::SetSetting(this, "selected", set);
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m_ElementHighlight = set;
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//UpdateAutoScroll();
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}
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}
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}
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}break;
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case GUIM_MOUSE_LEAVE:{
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GUI<int>::GetSetting(this, "selected", m_ElementHighlight);
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}break;
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// We can't inherent this routine from CList, because we need to include
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// a mouse click to open the dropdown, also the coordinates are changed.
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case GUIM_MOUSE_PRESS_LEFT:
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{
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if (!m_Open)
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{
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m_Open = true;
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GetScrollBar(0).SetPos(0.f);
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UpdateAutoScroll();
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GUI<int>::GetSetting(this, "selected", m_ElementHighlight);
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return; // overshadow
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}
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else
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{
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CPos mouse = GetMousePos();
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// If the regular area is pressed, then abort, and close.
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if (m_CachedActualSize.PointInside(mouse))
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{
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m_Open = false;
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return; // overshadow
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}
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if (!(mouse.x >= GetScrollBar(0).GetOuterRect().left &&
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mouse.x <= GetScrollBar(0).GetOuterRect().right) &&
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mouse.y >= GetListRect().top)
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{
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m_Open = false;
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}
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}
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} break;
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case GUIM_LOST_FOCUS:
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m_Open=false;
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break;
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case GUIM_LOAD:
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SetupListRect();
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break;
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default:
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break;
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}
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// Important that this is after, so that overshadowed implementations aren't processed
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CList::HandleMessage(Message);
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}
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int CDropDown::ManuallyHandleEvent(const SDL_Event* ev)
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{
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int szChar = ev->key.keysym.sym;
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bool update_highlight = false;
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switch (szChar)
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{
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case '\r':
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m_Open=false;
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break;
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case SDLK_HOME:
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case SDLK_END:
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case SDLK_UP:
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case SDLK_DOWN:
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case SDLK_PAGEUP:
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case SDLK_PAGEDOWN:
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if (!m_Open)
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return EV_PASS;
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// Set current selected item to highlighted, before
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// then really processing these in CList::ManuallyHandleEvent()
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GUI<int>::SetSetting(this, "selected", m_ElementHighlight);
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update_highlight = true;
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break;
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default:
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break;
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}
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CList::ManuallyHandleEvent(ev);
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if (update_highlight)
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GUI<int>::GetSetting(this, "selected", m_ElementHighlight);
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return EV_HANDLED;
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}
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void CDropDown::SetupListRect()
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{
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float size, buffer, button_width;
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GUI<float>::GetSetting(this, "dropdown_size", size);
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GUI<float>::GetSetting(this, "dropdown_buffer", buffer);
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GUI<float>::GetSetting(this, "button_width", button_width);
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if (m_ItemsYPositions.empty() || m_ItemsYPositions.back() >= size)
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{
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m_CachedListRect = CRect(m_CachedActualSize.left, m_CachedActualSize.bottom+buffer,
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m_CachedActualSize.right, m_CachedActualSize.bottom+buffer + size);
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m_HideScrollBar = false;
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}
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else
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{
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m_CachedListRect = CRect(m_CachedActualSize.left, m_CachedActualSize.bottom+buffer,
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m_CachedActualSize.right - GetScrollBar(0).GetStyle()->m_Width, m_CachedActualSize.bottom+buffer + m_ItemsYPositions.back());
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// We also need to hide the scrollbar
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m_HideScrollBar = true;
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}
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}
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CRect CDropDown::GetListRect() const
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{
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return m_CachedListRect;
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}
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bool CDropDown::MouseOver()
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{
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if(!GetGUI())
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throw PS_NEEDS_PGUI;
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if (m_Open)
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{
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CRect rect(m_CachedActualSize.left, m_CachedActualSize.top,
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m_CachedActualSize.right, GetListRect().bottom);
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return rect.PointInside(GetMousePos());
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}
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else
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return m_CachedActualSize.PointInside(GetMousePos());
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}
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void CDropDown::Draw()
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{
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if (!GetGUI())
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return;
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float bz = GetBufferedZ();
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float dropdown_size, button_width;
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GUI<float>::GetSetting(this, "dropdown_size", dropdown_size);
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GUI<float>::GetSetting(this, "button_width", button_width);
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CGUISpriteInstance *sprite, *sprite2, *sprite2_second;
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int cell_id, selected=0;
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CColor color;
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite", sprite);
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite2", sprite2);
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GUI<int>::GetSetting(this, "cell_id", cell_id);
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GUI<int>::GetSetting(this, "selected", selected);
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GUI<CColor>::GetSetting(this, "textcolor", color);
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bool enabled;
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GUI<bool>::GetSetting(this, "enabled", enabled);
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GetGUI()->DrawSprite(*sprite, cell_id, bz, m_CachedActualSize);
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if (button_width > 0.f)
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{
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CRect rect(m_CachedActualSize.right-button_width, m_CachedActualSize.top,
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m_CachedActualSize.right, m_CachedActualSize.bottom);
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if (!enabled)
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{
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite2_disabled", sprite2_second);
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GetGUI()->DrawSprite(GUI<>::FallBackSprite(*sprite2_second, *sprite2), cell_id, bz+0.05f, rect);
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}
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else
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if (m_Open)
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{
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite2_pressed", sprite2_second);
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GetGUI()->DrawSprite(GUI<>::FallBackSprite(*sprite2_second, *sprite2), cell_id, bz+0.05f, rect);
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}
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else
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if (m_MouseHovering)
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{
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite2_over", sprite2_second);
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GetGUI()->DrawSprite(GUI<>::FallBackSprite(*sprite2_second, *sprite2), cell_id, bz+0.05f, rect);
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}
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else
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GetGUI()->DrawSprite(*sprite2, cell_id, bz+0.05f, rect);
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}
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if (selected != -1) // TODO: Maybe check validity completely?
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{
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// figure out clipping rectangle
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CRect cliparea(m_CachedActualSize.left, m_CachedActualSize.top,
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m_CachedActualSize.right-button_width, m_CachedActualSize.bottom);
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CPos pos(m_CachedActualSize.left, m_CachedActualSize.top);
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IGUITextOwner::Draw(selected, color, pos, bz+0.1f, cliparea);
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}
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bool *scrollbar=NULL, old;
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GUI<bool>::GetSettingPointer(this, "scrollbar", scrollbar);
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old = *scrollbar;
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if (m_Open)
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{
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if (m_HideScrollBar)
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*scrollbar = false;
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DrawList(m_ElementHighlight, "sprite_list", "sprite_selectarea", "textcolor");
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if (m_HideScrollBar)
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*scrollbar = old;
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}
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}
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