forked from 0ad/0ad
181 lines
5.3 KiB
C++
Executable File
181 lines
5.3 KiB
C++
Executable File
/*
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GUI base
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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 <string>
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#include "GUI.h"
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using std::string;
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//--------------------------------------------------------
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// Help Classes/Structs for the GUI implementation
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//--------------------------------------------------------
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CClientArea::CClientArea() : pixel(0.f,0.f,0.f,0.f), percent(0.f,0.f,0.f,0.f)
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{
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}
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CClientArea::CClientArea(const CStr& Value)
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{
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SetClientArea(Value);
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}
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CRect CClientArea::GetClientArea(const CRect &parent) const
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{
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// If it's a 0 0 100% 100% we need no calculations
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if (percent == CRect(0.f,0.f,100.f,100.f) && pixel == CRect(0.f,0.f,0.f,0.f))
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return parent;
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CRect client;
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// This should probably be cached and not calculated all the time for every object.
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client.left = parent.left + (parent.right-parent.left)*percent.left/100.f + pixel.left;
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client.top = parent.top + (parent.bottom-parent.top)*percent.top/100.f + pixel.top;
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client.right = parent.left + (parent.right-parent.left)*percent.right/100.f + pixel.right;
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client.bottom = parent.top + (parent.bottom-parent.top)*percent.bottom/100.f + pixel.bottom;
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return client;
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}
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bool CClientArea::SetClientArea(const CStr& Value)
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{
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// Get value in STL string format
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string _Value = Value;
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// This might lack incredible speed, but since all XML files
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// are read at startup, reading 100 client areas will be
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// negligible in the loading time.
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// Setup parser to parse the value
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// One of the four values:
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// will give outputs like (in argument):
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// (200) <== no percent, just the first $value
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// (200) (percent) <== just the percent
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// (200) (percent) (100) <== percent PLUS pixel
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// (200) (percent) (-100) <== percent MINUS pixel
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// (200) (percent) (100) (-100) <== Both PLUS and MINUS are used, INVALID
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/*
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string one_value = "_[-_$arg(_minus)]$value[$arg(percent)%_[+_$value]_[-_$arg(_minus)$value]_]";
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string four_values = one_value + "$arg(delim)" +
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one_value + "$arg(delim)" +
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one_value + "$arg(delim)" +
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one_value + "$arg(delim)_"; // it's easier to just end with another delimiter
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*/
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// Don't use the above strings, because they make this code go very slowly
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const char* four_values =
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"_[-_$arg(_minus)]$value[$arg(percent)%_[+_$value]_[-_$arg(_minus)$value]_]" "$arg(delim)"
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"_[-_$arg(_minus)]$value[$arg(percent)%_[+_$value]_[-_$arg(_minus)$value]_]" "$arg(delim)"
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"_[-_$arg(_minus)]$value[$arg(percent)%_[+_$value]_[-_$arg(_minus)$value]_]" "$arg(delim)"
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"_[-_$arg(_minus)]$value[$arg(percent)%_[+_$value]_[-_$arg(_minus)$value]_]" "$arg(delim)"
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"_";
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CParser& parser (CParserCache::Get(four_values));
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CParserLine line;
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line.ParseString(parser, _Value);
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if (!line.m_ParseOK)
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return false;
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int arg_count[4]; // argument counts for the four values
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int arg_start[4] = {0,0,0,0}; // location of first argument, [0] is always 0
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// Divide into the four piles (delimiter is an argument named "delim")
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for (int i=0, valuenr=0; i<(int)line.GetArgCount(); ++i)
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{
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string str;
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line.GetArgString(i, str);
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if (str == "delim")
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{
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if (valuenr==0)
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{
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arg_count[0] = i;
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arg_start[1] = i+1;
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}
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else
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{
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if (valuenr!=3)
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{
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debug_assert(valuenr <= 2);
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arg_start[valuenr+1] = i+1;
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arg_count[valuenr] = arg_start[valuenr+1] - arg_start[valuenr] - 1;
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}
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else
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arg_count[3] = (int)line.GetArgCount() - arg_start[valuenr] - 1;
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}
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++valuenr;
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}
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}
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// Iterate argument
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// This is the scheme:
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// 1 argument = Just pixel value
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// 2 arguments = Just percent value
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// 3 arguments = percent and pixel
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// 4 arguments = INVALID
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// Default to 0
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float values[4][2] = {{0.f,0.f},{0.f,0.f},{0.f,0.f},{0.f,0.f}};
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for (int v=0; v<4; ++v)
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{
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if (arg_count[v] == 1)
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{
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string str;
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line.GetArgString(arg_start[v], str);
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if (!line.GetArgFloat(arg_start[v], values[v][1]))
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return false;
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}
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else
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if (arg_count[v] == 2)
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{
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if (!line.GetArgFloat(arg_start[v], values[v][0]))
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return false;
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}
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else
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if (arg_count[v] == 3)
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{
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if (!line.GetArgFloat(arg_start[v], values[v][0]) ||
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!line.GetArgFloat(arg_start[v]+2, values[v][1]))
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return false;
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}
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else return false;
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}
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// Now store the values[][] in the right place
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pixel.left = values[0][1];
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pixel.top = values[1][1];
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pixel.right = values[2][1];
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pixel.bottom = values[3][1];
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percent.left = values[0][0];
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percent.top = values[1][0];
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percent.right = values[2][0];
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percent.bottom = values[3][0];
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return true;
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}
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//--------------------------------------------------------
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// Error definitions
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//--------------------------------------------------------
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// TODO Gee: (2004-09-01) Keeper? The PS_NAME_ABIGUITY for instance doesn't let the user know which objects.
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DEFINE_ERROR(PS_NAME_TAKEN, "Reference name is taken");
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DEFINE_ERROR(PS_OBJECT_FAIL, "Object provided is null");
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DEFINE_ERROR(PS_SETTING_FAIL, "Setting does not exist");
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DEFINE_ERROR(PS_VALUE_INVALID, "Value provided is syntactically incorrect");
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DEFINE_ERROR(PS_NEEDS_PGUI, "m_pGUI is NULL when needed for a requested operation");
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DEFINE_ERROR(PS_NAME_AMBIGUITY, "Two or more objects are sharing name");
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DEFINE_ERROR(PS_NEEDS_NAME, "An object are trying to fit into a GUI without a name");
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DEFINE_ERROR(PS_LEXICAL_FAIL, "PS_LEXICAL_FAIL");
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DEFINE_ERROR(PS_SYNTACTICAL_FAIL, "PS_SYNTACTICAL_FAIL");
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