diff options
| -rw-r--r-- | gtk-gui.c | 49 |
1 files changed, 49 insertions, 0 deletions
@@ -1313,6 +1313,8 @@ static gboolean profile_tooltip (GtkWidget *widget, gint x, gint y, return FALSE; /* don't show tooltip */ } +static int zoom_x = -1, zoom_y = -1; + static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data) { struct dive *dive = current_dive; @@ -1332,6 +1334,11 @@ static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer init_profile_background(&gc); cairo_paint(gc.cr); + if (zoom_x >= 0) { + cairo_translate(gc.cr, -zoom_x, -zoom_y); + cairo_scale(gc.cr, 2.0, 2.0); + } + if (dive) { if (tooltip_rects) { free(tooltip_rects); @@ -1345,6 +1352,44 @@ static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer return FALSE; } +gboolean clicked(GtkWidget *widget, GdkEventButton *event, gpointer user_data) +{ + switch (event->button) { + case 3: + zoom_x = event->x; + zoom_y = event->y; + break; + default: + return TRUE; + } + gtk_widget_queue_draw(widget); + return TRUE; +} + +gboolean released(GtkWidget *widget, GdkEventButton *event, gpointer user_data) +{ + switch (event->button) { + case 3: + zoom_x = zoom_y = -1; + break; + default: + return TRUE; + } + gtk_widget_queue_draw(widget); + return TRUE; +} + +gboolean motion(GtkWidget *widget, GdkEventMotion *event, gpointer user_data) +{ + if (zoom_x < 0) + return TRUE; + + zoom_x = event->x; + zoom_y = event->y; + gtk_widget_queue_draw(widget); + return TRUE; +} + GtkWidget *dive_profile_widget(void) { GtkWidget *da; @@ -1352,6 +1397,10 @@ GtkWidget *dive_profile_widget(void) da = gtk_drawing_area_new(); gtk_widget_set_size_request(da, 350, 250); g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL); + g_signal_connect(da, "button-press-event", G_CALLBACK(clicked), NULL); + g_signal_connect(da, "button-release-event", G_CALLBACK(released), NULL); + g_signal_connect(da, "motion-notify-event", G_CALLBACK(motion), NULL); + gtk_widget_add_events(da, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_MOTION_MASK | GDK_BUTTON_RELEASE_MASK); return da; } |