forked from AuroraMiddleware/gtk
Add a transform test
This reveals some issues with scale handling.
This commit is contained in:
Matthias Clasen
parent
bf454e948d
commit
5be785bff8
@ -115,6 +115,7 @@ gtk_tests = [
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['testwindowdrag'],
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['testinhibitshortcuts'],
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['testtexthistory', ['../gtk/gtktexthistory.c']],
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['testzoom']
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]
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if os_unix
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276
tests/testzoom.c
Normal file
276
tests/testzoom.c
Normal file
@ -0,0 +1,276 @@
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#include <gtk/gtk.h>
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typedef struct
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{
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GtkWidget parent_instance;
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GtkWidget *child;
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float scale;
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float angle;
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} GtkZoom;
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typedef struct
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{
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GtkWidgetClass parent_class;
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} GtkZoomClass;
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enum {
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PROP_0,
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PROP_CHILD,
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PROP_SCALE,
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PROP_ANGLE,
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NUM_PROPERTIES
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};
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static GParamSpec *props[NUM_PROPERTIES] = { NULL, };
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GType gtk_zoom_get_type (void);
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G_DEFINE_TYPE (GtkZoom, gtk_zoom, GTK_TYPE_WIDGET)
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static void
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gtk_zoom_init (GtkZoom *zoom)
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{
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zoom->child = NULL;
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zoom->scale = 1.0;
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zoom->angle = 0.0;
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}
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static void
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gtk_zoom_dispose (GObject *object)
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{
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GtkZoom *zoom = (GtkZoom *)object;
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g_clear_pointer (&zoom->child, gtk_widget_unparent);
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G_OBJECT_CLASS (gtk_zoom_parent_class)->dispose (object);
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}
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static void
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update_transform (GtkZoom *zoom)
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{
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GtkLayoutManager *manager;
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GtkLayoutChild *child;
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GskTransform *transform;
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manager = gtk_widget_get_layout_manager (GTK_WIDGET (zoom));
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child = gtk_layout_manager_get_layout_child (manager, zoom->child);
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transform = NULL;
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transform = gsk_transform_rotate (transform, zoom->angle);
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transform = gsk_transform_scale (transform, zoom->scale, zoom->scale);
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gtk_fixed_layout_child_set_transform (GTK_FIXED_LAYOUT_CHILD (child), transform);
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gsk_transform_unref (transform);
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}
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static void
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gtk_zoom_set_scale (GtkZoom *zoom,
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float scale)
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{
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if (zoom->scale == scale)
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return;
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zoom->scale = scale;
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update_transform (zoom);
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g_object_notify_by_pspec (G_OBJECT (zoom), props[PROP_SCALE]);
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gtk_widget_queue_resize (GTK_WIDGET (zoom));
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}
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static void
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gtk_zoom_set_angle (GtkZoom *zoom,
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float angle)
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{
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if (zoom->angle == angle)
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return;
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zoom->angle = angle;
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update_transform (zoom);
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g_object_notify_by_pspec (G_OBJECT (zoom), props[PROP_ANGLE]);
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gtk_widget_queue_resize (GTK_WIDGET (zoom));
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}
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static void
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gtk_zoom_set_child (GtkZoom *zoom,
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GtkWidget *child)
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{
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g_clear_pointer (&zoom->child, gtk_widget_unparent);
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zoom->child = child;
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if (zoom->child)
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gtk_widget_set_parent (zoom->child, GTK_WIDGET (zoom));
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g_object_notify_by_pspec (G_OBJECT (zoom), props[PROP_CHILD]);
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}
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static void
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gtk_zoom_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkZoom *zoom = (GtkZoom *)object;
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switch (prop_id)
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{
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case PROP_SCALE:
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gtk_zoom_set_scale (zoom, g_value_get_float (value));
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break;
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case PROP_ANGLE:
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gtk_zoom_set_angle (zoom, g_value_get_float (value));
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break;
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case PROP_CHILD:
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gtk_zoom_set_child (zoom, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_zoom_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkZoom *zoom = (GtkZoom *)object;
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switch (prop_id)
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{
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case PROP_SCALE:
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g_value_set_float (value, zoom->scale);
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break;
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case PROP_ANGLE:
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g_value_set_float (value, zoom->angle);
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break;
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case PROP_CHILD:
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g_value_set_object (value, zoom->child);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_zoom_class_init (GtkZoomClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
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object_class->dispose = gtk_zoom_dispose;
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object_class->set_property = gtk_zoom_set_property;
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object_class->get_property = gtk_zoom_get_property;
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props[PROP_SCALE] = g_param_spec_float ("scale", "", "",
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0.0, 100.0, 1.0,
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G_PARAM_READWRITE);
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props[PROP_ANGLE] = g_param_spec_float ("angle", "", "",
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0.0, 360.0, 1.0,
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G_PARAM_READWRITE);
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props[PROP_CHILD] = g_param_spec_object ("child", "", "",
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GTK_TYPE_WIDGET,
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G_PARAM_READWRITE);
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g_object_class_install_properties (object_class, NUM_PROPERTIES, props);
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gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_FIXED_LAYOUT);
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}
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static GtkWidget *
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gtk_zoom_new (void)
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{
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return g_object_new (gtk_zoom_get_type (), NULL);
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}
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int
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main (int argc, char *argv[])
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{
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GtkWindow *window;
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GtkWidget *zoom;
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GtkWidget *box;
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GtkWidget *grid;
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GtkWidget *sw;
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GtkWidget *scale;
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GtkWidget *angle;
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GtkWidget *child;
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GtkAdjustment *adjustment;
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gtk_init ();
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window = GTK_WINDOW (gtk_window_new ());
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gtk_window_set_default_size (GTK_WINDOW (window), 600, 400);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_window_set_child (window, box);
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grid = gtk_grid_new ();
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gtk_grid_set_column_spacing (GTK_GRID (grid), 10);
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scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 1.0, 10.0, 1.0);
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gtk_widget_set_hexpand (scale, TRUE);
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gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Scale"), 0, 0, 1, 1);
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gtk_grid_attach (GTK_GRID (grid), scale, 1, 0, 1, 1);
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angle = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, 0.0, 360.0, 1.0);
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gtk_scale_add_mark (GTK_SCALE (angle), 90.0, GTK_POS_BOTTOM, NULL);
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gtk_scale_add_mark (GTK_SCALE (angle), 180.0, GTK_POS_BOTTOM, NULL);
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gtk_scale_add_mark (GTK_SCALE (angle), 270.0, GTK_POS_BOTTOM, NULL);
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gtk_widget_set_hexpand (angle, TRUE);
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gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Angle"), 0, 1, 1, 1);
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gtk_grid_attach (GTK_GRID (grid), angle, 1, 1, 1, 1);
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gtk_box_append (GTK_BOX (box), grid);
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sw = gtk_scrolled_window_new ();
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gtk_widget_set_hexpand (sw, TRUE);
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gtk_widget_set_vexpand (sw, TRUE);
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gtk_box_append (GTK_BOX (box), sw);
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zoom = gtk_zoom_new ();
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gtk_widget_set_halign (zoom, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (zoom, GTK_ALIGN_CENTER);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), zoom);
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adjustment = gtk_range_get_adjustment (GTK_RANGE (scale));
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g_object_bind_property (adjustment, "value",
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zoom, "scale",
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G_BINDING_DEFAULT);
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adjustment = gtk_range_get_adjustment (GTK_RANGE (angle));
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g_object_bind_property (adjustment, "value",
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zoom, "angle",
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G_BINDING_DEFAULT);
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if (argc > 1)
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{
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GtkBuilder *builder = gtk_builder_new ();
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gtk_builder_add_from_file (builder, argv[1], NULL);
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child = GTK_WIDGET (gtk_builder_get_object (builder, "child"));
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gtk_zoom_set_child ((GtkZoom *)zoom, child);
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g_object_unref (builder);
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}
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else
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gtk_zoom_set_child ((GtkZoom *)zoom, gtk_button_new_with_label ("Click me!"));
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gtk_window_present (window);
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while (g_list_model_get_n_items (gtk_window_get_toplevels ()) > 0)
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g_main_context_iteration (NULL, TRUE);
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return 0;
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}
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