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gtk-stats: Support trackpad zoom/pan gestures in Timeline view

This commit is contained in:
rdb 2025-02-27 15:10:53 +01:00
parent 7c16720bb9
commit 5a97488adf
2 changed files with 36 additions and 1 deletions
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33
pandatool/src/gtk-stats/gtkStatsTimeline.cxx
View File

@ -54,7 +54,8 @@ GtkStatsTimeline(GtkStatsMonitor *monitor) :
G_CALLBACK(thread_area_draw_callback), this);
// Listen for mouse wheel and keyboard events.
gtk_widget_add_events(_graph_window, GDK_SCROLL_MASK |
gtk_widget_add_events(_graph_window, GDK_SMOOTH_SCROLL_MASK |
GDK_SCROLL_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK);
gtk_widget_set_can_focus(_graph_window, TRUE);
@ -65,6 +66,25 @@ GtkStatsTimeline(GtkStatsMonitor *monitor) :
g_signal_connect(G_OBJECT(_graph_window), "key_release_event",
G_CALLBACK(key_release_callback), this);
// Set up trackpad pinch and swipe gestures.
_zoom_gesture = gtk_gesture_zoom_new(_graph_window);
g_signal_connect(_zoom_gesture, "begin",
G_CALLBACK(+[](GtkGestureZoom *gesture, GdkEventSequence *sequence, gpointer data) {
GtkStatsTimeline *self = (GtkStatsTimeline *)data;
self->_zoom_scale = self->get_horizontal_scale();
}), this);
g_signal_connect(_zoom_gesture, "scale-changed",
G_CALLBACK((+[](GtkGestureZoom *gesture, gdouble scale, gpointer data) {
GtkStatsTimeline *self = (GtkStatsTimeline *)data;
gdouble x, y;
if (gtk_gesture_get_point(GTK_GESTURE(gesture), NULL, &x, &y)) {
int graph_x = (int)(x * self->_cr_scale);
self->zoom_by(log(scale) * 0.8, self->pixel_to_timestamp(graph_x));
self->start_animation();
}
})), this);
int min_height = 0;
if (!_threads.empty()) {
double height = row_to_pixel(get_num_rows()) + _pixel_scale * 2.5;
@ -100,6 +120,7 @@ GtkStatsTimeline(GtkStatsMonitor *monitor) :
GtkStatsTimeline::
~GtkStatsTimeline() {
cairo_pattern_destroy(_grid_pattern);
g_object_unref(_zoom_gesture);
}
/**
@ -627,6 +648,16 @@ handle_scroll(int graph_x, int graph_y, double dx, double dy, bool ctrl_held) {
return handled;
}
/**
*
*/
gboolean GtkStatsTimeline::
handle_zoom(int graph_x, int graph_y, double scale) {
zoom_to(get_horizontal_scale() / scale, pixel_to_timestamp(graph_x));
start_animation();
return TRUE;
}
/**
*
*/

4
pandatool/src/gtk-stats/gtkStatsTimeline.h
View File

@ -63,6 +63,7 @@ protected:
virtual gboolean handle_leave();
gboolean handle_scroll(int graph_x, int graph_y,
double dx, double dy, bool ctrl_held);
gboolean handle_zoom(int graph_x, int graph_y, double scale);
gboolean handle_key(bool pressed, guint val, guint16 hw_code);
private:
@ -92,6 +93,9 @@ private:
int _highlighted_x = 0;
int _scroll = 0;
ColorBar _popup_bar;
double _zoom_scale = 1.0;
GtkGesture *_zoom_gesture = nullptr;
};
#endif