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Improves cursor hotspot location management

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This commit is contained in:
Pandagrapher
2023-05-01 11:18:07 +02:00
parent f7c25b18af
commit 3120aea7dd
1 changed files with 12 additions and 6 deletions
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18
rtgui/cursormanager.cc
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@@ -34,15 +34,21 @@ void CursorManager::init (Glib::RefPtr<Gdk::Window> mainWindow)
#endif
auto createCursor = [this] (const Glib::ustring &name, const Gdk::CursorType &fb_cursor) -> Glib::RefPtr<Gdk::Cursor>
auto createCursor = [this] (const Glib::ustring &name, const Gdk::CursorType &fb_cursor,
const double offX = 0., const double offY = 0.) -> Glib::RefPtr<Gdk::Cursor>
{
// Gdk Cursor Theme is not supported on some OS (ex : MacOS)
// Notes:
// - Gdk Cursor Theme is not supported on some OS (ex : MacOS).
// Cursor is retrieved from theme thanks to an RTSurface
// - By default, cursor hotspot is located at middle of surface.
// Use (offX, offY) between -1 and 0.99 to move cursor hotspot
auto cursor_surf = RTSurface(name, Gtk::ICON_SIZE_MENU);
double offXb = std::min(std::max(-1., offX), 0.99); // offX should belong to (-1; 0.99)
double offYb = std::min(std::max(-1., offY), 0.99); // offY should belong to (-1; 0.99)
auto cursor = Gdk::Cursor::create(this->display,
cursor_surf.get(),
cursor_surf.getWidth(),
cursor_surf.getHeight());
cursor_surf.getWidth() / 2 * (1. + offXb),
cursor_surf.getHeight() / 2 * (1. + offYb));
if (!cursor) {
cursor = Gdk::Cursor::create(this->display, fb_cursor);
@@ -52,7 +58,7 @@ void CursorManager::init (Glib::RefPtr<Gdk::Window> mainWindow)
};
cAdd = createCursor("crosshair-small", Gdk::PLUS);
cAddPicker = createCursor("color-picker-add-hicontrast", Gdk::PLUS);
cAddPicker = createCursor("color-picker-add-hicontrast", Gdk::PLUS, -0.333, 0.75);
cCropDraw = createCursor("crop-point-hicontrast", Gdk::DIAMOND_CROSS);
cCrosshair = createCursor("crosshair-hicontrast", Gdk::CROSSHAIR);
cEmpty = createCursor("empty", Gdk::BLANK_CURSOR);
@@ -68,7 +74,7 @@ void CursorManager::init (Glib::RefPtr<Gdk::Window> mainWindow)
cMoveXY = createCursor("node-move-xy-hicontrast", Gdk::FLEUR);
cMoveY = createCursor("node-move-y-hicontrast", Gdk::SB_V_DOUBLE_ARROW);
cRotate = createCursor("rotate-aroundnode-hicontrast", Gdk::EXCHANGE);
cWB = createCursor("color-picker-hicontrast", Gdk::TARGET);
cWB = createCursor("color-picker-hicontrast", Gdk::TARGET, -0.333, 0.75);
cWait = createCursor("gears", Gdk::CLOCK);
window = mainWindow;