Button.cpp

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00032 
00033 #include "Button.hpp"
00034 
00035 // Border width when button is deselected.
00036 static const int deselectedBorderWidth = 1;
00037 
00038 // Border width when button is selected.
00039 static const int selectedBorderWidth = 2;
00040 
00041 // Total width of the border region.
00042 static const int borderPadding = selectedBorderWidth + 1;
00043 
00044 Button::Button() {
00045   border.setParent (this);
00046   border.setBorderWidth(deselectedBorderWidth);
00047   label.setParent (this);
00048 }
00049 
00050 int Button::preferredWidth() const {
00051   return label.preferredWidth() + 2 * borderPadding;
00052 }
00053 
00054 int Button::preferredHeight() const {
00055   return label.preferredHeight() + 2 * borderPadding;
00056 }
00057 
00058 void Button::focusChanged(bool focused) {
00059   border.setBorderWidth(focused ? selectedBorderWidth : deselectedBorderWidth);
00060   invalidate(); // Ensure border and text are redrawn together.
00061 }
00062 
00063 void Button::resized() {
00064   border.resize(width(), height());
00065   label.move(borderPadding, borderPadding);
00066   label.resize(border.width() - 2 * borderPadding,
00067                border.height() - 2 * borderPadding);
00068 }
00069 
00070 bool Button::doProcessKey(Key key) {
00071   bool handled = (key == LeftClickKey);
00072   if (handled && clickedHandler) {
00073     clickedHandler(this);
00074   }
00075   return handled;
00076 }