static void _GuiGtkList_selectionChangedCallback (GtkTreeSelection *sel, gpointer void_me) {
iam (GuiList);
if (my selectionChangedCallback != NULL && ! my blockSelectionChangedCallback) {
//Melder_casual ("Selection changed.");
struct structGuiListEvent event = { GTK_WIDGET (gtk_tree_selection_get_tree_view (sel)) };
my selectionChangedCallback (my selectionChangedBoss, & event);
}
}
static void gui_drawingarea_cb_click (Picture me, GuiDrawingArea_ClickEvent event) {
int xstart = event -> x;
int ystart = event -> y;
double xWC, yWC;
int ixstart, iystart, ix, iy, oldix = 0, oldiy = 0;
Graphics_DCtoWC (my selectionGraphics.get(), xstart, ystart, & xWC, & yWC);
ix = ixstart = 1 + floor (xWC * SQUARES / SIDE);
iy = iystart = SQUARES - floor (yWC * SQUARES / SIDE);
if (ixstart < 1 || ixstart > SQUARES || iystart < 1 || iystart > SQUARES) return;
if (event -> shiftKeyPressed) {
int ix1 = 1 + floor (my selx1 * SQUARES / SIDE);
int ix2 = floor (my selx2 * SQUARES / SIDE);
int iy1 = SQUARES + 1 - floor (my sely2 * SQUARES / SIDE);
int iy2 = SQUARES - floor (my sely1 * SQUARES / SIDE);
ixstart = ix < (ix1 + ix2) / 2 ? ix2 : ix1;
iystart = iy < (iy1 + iy2) / 2 ? iy2 : iy1;
}
//while (Graphics_mouseStillDown (my selectionGraphics)) {
do {
Graphics_getMouseLocation (my selectionGraphics.get(), & xWC, & yWC);
ix = 1 + floor (xWC * SQUARES / SIDE);
iy = SQUARES - floor (yWC * SQUARES / SIDE);
if (ix >= 1 && ix <= SQUARES && iy >= 1 && iy <= SQUARES && (ix != oldix || iy != oldiy)) {
int ix1, ix2, iy1, iy2;
if (ix < ixstart) { ix1 = ix; ix2 = ixstart; }
else { ix1 = ixstart; ix2 = ix; }
if (iy < iystart) { iy1 = iy; iy2 = iystart; }
else { iy1 = iystart; iy2 = iy; }
if (my mouseSelectsInnerViewport) {
int fontSize = Graphics_inqFontSize (my graphics.get());
double xmargin = fontSize * 4.2 / 72.0, ymargin = fontSize * 2.8 / 72.0;
if (xmargin > ix2 - ix1 + 1) xmargin = ix2 - ix1 + 1;
if (ymargin > iy2 - iy1 + 1) ymargin = iy2 - iy1 + 1;
Picture_setSelection (me, 0.5 * (ix1 - 1) - xmargin, 0.5 * ix2 + xmargin,
0.5 * (SQUARES - iy2) - ymargin, 0.5 * (SQUARES + 1 - iy1) + ymargin, false);
} else {
Picture_setSelection (me, 0.5 * (ix1 - 1), 0.5 * ix2,
0.5 * (SQUARES - iy2), 0.5 * (SQUARES + 1 - iy1), false);
}
oldix = ix; oldiy = iy;
}
} while (Graphics_mouseStillDown (my selectionGraphics.get()));
// }
#if cocoa
Graphics_updateWs (my selectionGraphics.get()); // to change the dark red back into black
#endif
if (my selectionChangedCallback) {
//Melder_casual (U"selectionChangedCallback from gui_drawingarea_cb_click");
my selectionChangedCallback (me, my selectionChangedClosure,
my selx1, my selx2, my sely1, my sely2);
}
}
void Picture_setSelection
(Picture me, double x1NDC, double x2NDC, double y1NDC, double y2NDC, bool notify)
{
if (my drawingArea) {
Melder_assert (my drawingArea -> d_widget);
drawSelection (me, 0); // unselect
}
my selx1 = x1NDC;
my selx2 = x2NDC;
my sely1 = y1NDC;
my sely2 = y2NDC;
if (my drawingArea) {
drawSelection (me, 1); // select
}
if (notify && my selectionChangedCallback) {
//Melder_casual (U"selectionChangedCallback from Picture_setSelection");
my selectionChangedCallback (me, my selectionChangedClosure,
my selx1, my selx2, my sely1, my sely2);
}
}