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https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-09-19 21:40:22 +00:00
a079fd2def
Make the transform (transfer full). 1. This makes sure we actually reference the transform. Previously we did not. 2. Most callers create a new transform to pass to us. Now they don't have to uref it anymore.
343 lines
11 KiB
C
343 lines
11 KiB
C
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#include <gtk/gtk.h>
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static const char *css =
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"test>button {"
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" all: unset; "
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" background-color: white;"
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" border: 30px solid teal;"
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" margin: 40px;"
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" padding: 40px;"
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"}"
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"test>button:hover {"
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" background-color: blue;"
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"}"
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"test image {"
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" background-color: purple;"
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"}"
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;
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/* Just so we can avoid a signal */
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GtkWidget *transform_tester;
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GtkWidget *test_widget;
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GtkWidget *test_child;
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float scale = 1;
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gboolean do_picking = TRUE;
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static const GdkRGBA RED = {1, 0, 0, 0.4};
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static const GdkRGBA GREEN = {0, 1, 0, 0.7};
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static const GdkRGBA BLUE = {0, 0, 1, 0.4};
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static const GdkRGBA BLACK = {0, 0, 0, 1 };
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/* ######################################################################### */
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/* ############################## MatrixChooser ############################ */
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/* ######################################################################### */
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#define GTK_TYPE_MATRIX_CHOOSER (gtk_matrix_chooser_get_type ())
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G_DECLARE_FINAL_TYPE (GtkMatrixChooser, gtk_matrix_chooser, GTK, MATRIX_CHOOSER, GtkWidget)
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struct _GtkMatrixChooser
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{
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GtkWidget parent_instance;
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};
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G_DEFINE_TYPE (GtkMatrixChooser, gtk_matrix_chooser, GTK_TYPE_WIDGET)
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static void
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gtk_matrix_chooser_init (GtkMatrixChooser *self)
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{
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}
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static void
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gtk_matrix_chooser_class_init (GtkMatrixChooserClass *klass)
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{
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}
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/* ######################################################################### */
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/* ############################# TransformTester ########################### */
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/* ######################################################################### */
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#define TEST_WIDGET_MIN_SIZE 100
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#define GTK_TYPE_TRANSFORM_TESTER (gtk_transform_tester_get_type ())
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G_DECLARE_FINAL_TYPE (GtkTransformTester, gtk_transform_tester, GTK, TRANSFORM_TESTER, GtkWidget);
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struct _GtkTransformTester
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{
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GtkWidget parent_instance;
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GtkWidget *test_widget;
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int pick_increase;
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};
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G_DEFINE_TYPE (GtkTransformTester, gtk_transform_tester, GTK_TYPE_WIDGET);
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static void
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gtk_transform_tester_measure (GtkWidget *widget,
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GtkOrientation orientation,
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int for_size,
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int *minimum,
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int *natural,
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int *minimum_baseline,
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int *natural_baseline)
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{
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GtkTransformTester *self = (GtkTransformTester *)widget;
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if (self->test_widget)
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{
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gtk_widget_measure (self->test_widget, orientation, for_size,
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minimum, natural, NULL, NULL);
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}
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}
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static void
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gtk_transform_tester_size_allocate (GtkWidget *widget,
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int width,
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int height,
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int baseline)
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{
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GtkTransformTester *self = (GtkTransformTester *)widget;
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GskTransform *global_transform;
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int w, h;
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if (!self->test_widget)
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return;
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scale += 2.5f;
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gtk_widget_measure (self->test_widget, GTK_ORIENTATION_HORIZONTAL, -1,
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&w, NULL, NULL, NULL);
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gtk_widget_measure (self->test_widget, GTK_ORIENTATION_VERTICAL, w,
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&h, NULL, NULL, NULL);
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g_message ("%s: %d, %d", __FUNCTION__, w, h);
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global_transform = NULL;
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global_transform = gsk_transform_translate (global_transform, &GRAPHENE_POINT_INIT (width / 2.0f, height / 2.0f));
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global_transform = gsk_transform_rotate (global_transform, scale);
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global_transform = gsk_transform_translate (global_transform, &GRAPHENE_POINT_INIT (-w / 2.0f, -h / 2.0f));
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gtk_widget_allocate (self->test_widget,
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w, h,
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-1,
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global_transform);
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}
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static void
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gtk_transform_tester_snapshot (GtkWidget *widget,
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GtkSnapshot *snapshot)
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{
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GtkTransformTester *self = (GtkTransformTester *)widget;
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const int width = gtk_widget_get_width (widget);
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const int height = gtk_widget_get_height (widget);
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const int inc = self->pick_increase;
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graphene_rect_t child_bounds;
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graphene_rect_t self_bounds;
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int x, y;
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GTK_WIDGET_CLASS (gtk_transform_tester_parent_class)->snapshot (widget, snapshot);
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if (!do_picking ||
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!gtk_widget_compute_bounds (self->test_widget, widget, &child_bounds) ||
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!gtk_widget_compute_bounds (self->test_widget, self->test_widget, &self_bounds))
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return;
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{
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const struct {
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graphene_point_t coords;
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GdkRGBA color;
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} points[4] = {
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{ self_bounds.origin, {1, 0, 0, 1} },
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{ GRAPHENE_POINT_INIT (self_bounds.origin.x + self_bounds.size.width, self_bounds.origin.y), {0, 1, 0, 1} },
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{ GRAPHENE_POINT_INIT (self_bounds.origin.x + self_bounds.size.width, self_bounds.origin.y + self_bounds.size.height), {0, 0, 1, 1} },
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{ GRAPHENE_POINT_INIT (self_bounds.origin.x, self_bounds.origin.y + self_bounds.size.height), {1, 0, 1, 1} }
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};
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for (x = 0; x < G_N_ELEMENTS (points); x ++)
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{
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int px, py;
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gtk_widget_translate_coordinates (self->test_widget, widget,
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points[x].coords.x, points[x].coords.y,
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&px, &py);
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gtk_snapshot_append_color (snapshot, &points[x].color,
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&GRAPHENE_RECT_INIT (px, py,
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4,
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4));
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}
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}
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/* Now add custom drawing */
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for (x = 0; x < width; x += inc)
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{
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for (y = 0; y < height; y += inc)
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{
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const float px = x;
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const float py = y;
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GtkWidget *picked;
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#if 1
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picked = gtk_widget_pick (widget, px, py, GTK_PICK_DEFAULT);
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#else
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{
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int dx, dy;
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gtk_widget_translate_coordinates (widget, self->test_widget, px, py, &dx, &dy);
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picked = gtk_widget_pick (self->test_widget, dx, dy, GTK_PICK_DEFAULT);
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}
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#endif
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if (picked == self->test_widget)
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gtk_snapshot_append_color (snapshot, &GREEN,
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&GRAPHENE_RECT_INIT (px - (inc / 2), py - (inc / 2), inc, inc));
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else if (picked == test_child)
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gtk_snapshot_append_color (snapshot, &BLUE,
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&GRAPHENE_RECT_INIT (px - (inc / 2), py - (inc / 2), inc, inc));
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else
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gtk_snapshot_append_color (snapshot, &RED,
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&GRAPHENE_RECT_INIT (px - (inc / 2), py - (inc / 2), inc, inc));
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}
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}
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gtk_snapshot_append_color (snapshot, &BLACK,
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&GRAPHENE_RECT_INIT (child_bounds.origin.x,
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child_bounds.origin.y,
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child_bounds.size.width,
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1));
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gtk_snapshot_append_color (snapshot, &BLACK,
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&GRAPHENE_RECT_INIT (child_bounds.origin.x + child_bounds.size.width,
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child_bounds.origin.y,
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1,
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child_bounds.size.height));
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gtk_snapshot_append_color (snapshot, &BLACK,
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&GRAPHENE_RECT_INIT (child_bounds.origin.x,
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child_bounds.origin.y + child_bounds.size.height,
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child_bounds.size.width,
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1));
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gtk_snapshot_append_color (snapshot, &BLACK,
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&GRAPHENE_RECT_INIT (child_bounds.origin.x,
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child_bounds.origin.y,
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1,
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child_bounds.size.height));
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}
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static void
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gtk_transform_tester_init (GtkTransformTester *self)
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{
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self->pick_increase = 4;
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}
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static void
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gtk_transform_tester_class_init (GtkTransformTesterClass *klass)
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{
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GtkWidgetClass *widget_class = (GtkWidgetClass *)klass;
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widget_class->measure = gtk_transform_tester_measure;
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widget_class->size_allocate = gtk_transform_tester_size_allocate;
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widget_class->snapshot = gtk_transform_tester_snapshot;
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gtk_widget_class_set_css_name (widget_class, "test");
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}
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static gboolean
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tick_cb (GtkWidget *widget,
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GdkFrameClock *frame_clock,
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gpointer user_data)
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{
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gtk_widget_queue_allocate (widget);
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return G_SOURCE_CONTINUE;
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}
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static void
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gtk_transform_tester_set_test_widget (GtkTransformTester *self,
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GtkWidget *test_widget)
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{
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g_assert (!self->test_widget);
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self->test_widget = test_widget;
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gtk_widget_set_parent (test_widget, (GtkWidget *)self);
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gtk_widget_add_tick_callback (GTK_WIDGET (self), tick_cb, NULL, NULL);
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}
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static void
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toggled_cb (GtkToggleButton *source,
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gpointer user_data)
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{
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do_picking = gtk_toggle_button_get_active (source);
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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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GtkWidget *window;
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GtkWidget *matrix_chooser;
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GtkWidget *box;
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GtkWidget *titlebar;
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GtkWidget *toggle_button;
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GtkCssProvider *provider;
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gtk_init ();
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provider = gtk_css_provider_new ();
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gtk_css_provider_load_from_data (provider, css, -1);
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gtk_style_context_add_provider_for_display (gdk_display_get_default (),
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GTK_STYLE_PROVIDER (provider),
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GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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matrix_chooser = g_object_new (GTK_TYPE_MATRIX_CHOOSER, NULL);
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transform_tester = g_object_new (GTK_TYPE_TRANSFORM_TESTER, NULL);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
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titlebar = gtk_header_bar_new ();
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gtk_window_set_titlebar (GTK_WINDOW (window), titlebar);
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gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (titlebar), TRUE);
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toggle_button = gtk_toggle_button_new ();
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gtk_button_set_label (GTK_BUTTON (toggle_button), "Picking");
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle_button), do_picking);
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g_signal_connect (toggle_button, "toggled", G_CALLBACK (toggled_cb), NULL);
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gtk_container_add (GTK_CONTAINER (titlebar), toggle_button);
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test_widget = gtk_button_new ();
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gtk_widget_set_size_request (test_widget, TEST_WIDGET_MIN_SIZE, TEST_WIDGET_MIN_SIZE);
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gtk_widget_set_halign (test_widget, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (test_widget, GTK_ALIGN_CENTER);
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test_child = gtk_image_new_from_icon_name ("weather-clear");
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gtk_widget_set_halign (test_child, GTK_ALIGN_CENTER);
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gtk_widget_set_valign (test_child, GTK_ALIGN_CENTER);
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gtk_widget_set_size_request (test_child, TEST_WIDGET_MIN_SIZE / 2, TEST_WIDGET_MIN_SIZE / 2);
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gtk_container_add (GTK_CONTAINER (test_widget), test_child);
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gtk_transform_tester_set_test_widget (GTK_TRANSFORM_TESTER (transform_tester), test_widget);
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gtk_widget_set_vexpand (transform_tester, TRUE);
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gtk_container_add (GTK_CONTAINER (box), transform_tester);
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gtk_container_add (GTK_CONTAINER (box), matrix_chooser);
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gtk_container_add (GTK_CONTAINER (window), box);
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gtk_window_set_default_size ((GtkWindow *)window, 200, 200);
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g_signal_connect (window, "close-request", G_CALLBACK (gtk_main_quit), NULL);
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gtk_widget_show (window);
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gtk_main ();
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return 0;
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}
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