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Merge branch 'fix-texture-scale-rotation' into 'main'

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gtk4-demo: Polish the image scaling demo

See merge request GNOME/gtk!5649
This commit is contained in:
Matthias Clasen 2023-03-14 05:08:37 +00:00
commit 7b1644b2d0
3 changed files with 136 additions and 18 deletions
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106
demos/gtk-demo/demo3widget.c
View File

@ -28,6 +28,80 @@ struct _Demo3WidgetClass
G_DEFINE_TYPE (Demo3Widget, demo3_widget, GTK_TYPE_WIDGET)
static gboolean
query_tooltip (GtkWidget *widget,
int x,
int y,
gboolean keyboard_mode,
GtkTooltip *tooltip,
gpointer data)
{
Demo3Widget *self = DEMO3_WIDGET (widget);
GtkWidget *grid;
GtkWidget *label;
char *s, *s2;
const char *filter[] = { "Linear", "Nearest", "Trilinear" };
int precision, l;
grid = gtk_grid_new ();
gtk_grid_set_column_spacing (GTK_GRID (grid), 12);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
label = gtk_label_new ("Texture");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1);
s = g_strdup_printf ("%d\342\200\206\303\227\342\200\206%d",
gdk_texture_get_width (self->texture),
gdk_texture_get_height (self->texture));
label = gtk_label_new (s);
g_free (s);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 0, 1, 1);
label = gtk_label_new ("Rotation");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1);
s = g_strdup_printf ("%.1f", self->angle);
if (g_str_has_suffix (s, ".0"))
s[strlen (s) - 2] = '\0';
s2 = g_strconcat (s, "\302\260", NULL);
label = gtk_label_new (s2);
g_free (s2);
g_free (s);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 1, 1, 1);
label = gtk_label_new ("Scale");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 2, 1, 1);
precision = 1;
do {
s = g_strdup_printf ("%.*f", precision, self->scale);
l = strlen (s) - 1;
while (s[l] == '0')
l--;
if (s[l] == '.')
s[l] = '\0';
precision++;
} while (strcmp (s, "0") == 0);
label = gtk_label_new (s);
g_free (s);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 2, 1, 1);
label = gtk_label_new ("Filter");
gtk_label_set_xalign (GTK_LABEL (label), 0);
gtk_grid_attach (GTK_GRID (grid), label, 0, 3, 1, 1);
label = gtk_label_new (filter[self->filter]);
gtk_label_set_xalign (GTK_LABEL (label), 1);
gtk_grid_attach (GTK_GRID (grid), label, 1, 3, 1, 1);
gtk_tooltip_set_custom (tooltip, grid);
return TRUE;
}
static void
demo3_widget_init (Demo3Widget *self)
{
@ -135,6 +209,8 @@ demo3_widget_size_allocate (GtkWidget *widget,
gtk_popover_present (GTK_POPOVER (self->menu));
}
static void update_actions (Demo3Widget *self);
static void
demo3_widget_set_property (GObject *object,
guint prop_id,
@ -153,6 +229,7 @@ demo3_widget_set_property (GObject *object,
case PROP_SCALE:
self->scale = g_value_get_float (value);
update_actions (self);
gtk_widget_queue_resize (GTK_WIDGET (object));
break;
@ -219,6 +296,14 @@ pressed_cb (GtkGestureClick *gesture,
gtk_popover_popup (GTK_POPOVER (self->menu));
}
static void
update_actions (Demo3Widget *self)
{
gtk_widget_action_set_enabled (GTK_WIDGET (self), "zoom.in", self->scale < 1024.);
gtk_widget_action_set_enabled (GTK_WIDGET (self), "zoom.out", self->scale > 1./1024.);
gtk_widget_action_set_enabled (GTK_WIDGET (self), "zoom.reset", self->scale != 1.);
}
static void
zoom_cb (GtkWidget *widget,
const char *action_name,
@ -228,15 +313,13 @@ zoom_cb (GtkWidget *widget,
float scale;
if (g_str_equal (action_name, "zoom.in"))
scale = MIN (10, self->scale * M_SQRT2);
scale = MIN (1024., self->scale * M_SQRT2);
else if (g_str_equal (action_name, "zoom.out"))
scale = MAX (0.01, self->scale / M_SQRT2);
else
scale = MAX (1./1024., self->scale / M_SQRT2);
else if (g_str_equal (action_name, "zoom.reset"))
scale = 1.0;
gtk_widget_action_set_enabled (widget, "zoom.in", scale < 10);
gtk_widget_action_set_enabled (widget, "zoom.out", scale > 0.01);
gtk_widget_action_set_enabled (widget, "zoom.reset", scale != 1);
else
g_assert_not_reached ();
g_object_set (widget, "scale", scale, NULL);
}
@ -275,7 +358,7 @@ demo3_widget_class_init (Demo3WidgetClass *class)
g_object_class_install_property (object_class, PROP_SCALE,
g_param_spec_float ("scale", NULL, NULL,
0.0, 1024.0, 1.0,
1./1024., 1024., 1.0,
G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_ANGLE,
@ -307,7 +390,12 @@ demo3_widget_new (const char *resource)
texture = gdk_texture_new_from_resource (resource);
self = g_object_new (DEMO3_TYPE_WIDGET, "texture", texture, NULL);
self = g_object_new (DEMO3_TYPE_WIDGET,
"texture", texture,
"has-tooltip", TRUE,
NULL);
g_signal_connect (self, "query-tooltip", G_CALLBACK (query_tooltip), NULL);
g_object_unref (texture);

46
demos/gtk-demo/menu.c
View File

@ -84,14 +84,36 @@ rotate (GtkWidget *button,
g_object_set (demo, "angle", angle, NULL);
}
static void
scale_changed (GtkRange *range,
GtkWidget *widget)
static gboolean
transform_to (GBinding *binding,
const GValue *src,
GValue *dest,
gpointer user_data)
{
float scale;
double from;
float to;
scale = (float) pow (2., gtk_range_get_value (range));
g_object_set (widget, "scale", scale, NULL);
from = g_value_get_double (src);
to = (float) pow (2., from);
g_value_set_float (dest, to);
return TRUE;
}
static gboolean
transform_from (GBinding *binding,
const GValue *src,
GValue *dest,
gpointer user_data)
{
float to;
double from;
to = g_value_get_float (src);
from = log2 (to);
g_value_set_double (dest, from);
return TRUE;
}
GtkWidget *
@ -139,9 +161,10 @@ do_menu (GtkWidget *do_widget)
g_signal_connect (button, "clicked", G_CALLBACK (rotate), widget);
gtk_box_append (GTK_BOX (box2), button);
scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, -10, 10.0, 0.1);
scale = gtk_scale_new_with_range (GTK_ORIENTATION_HORIZONTAL, -10., 10., 0.1);
gtk_scale_add_mark (GTK_SCALE (scale), 0., GTK_POS_TOP, NULL);
gtk_widget_set_tooltip_text (scale, "Zoom");
gtk_range_set_value (GTK_RANGE (scale), 1.0);
gtk_range_set_value (GTK_RANGE (scale), 0.);
gtk_widget_set_hexpand (scale, TRUE);
gtk_box_append (GTK_BOX (box2), scale);
@ -151,7 +174,12 @@ do_menu (GtkWidget *do_widget)
g_object_bind_property (dropdown, "selected", widget, "filter", G_BINDING_DEFAULT);
g_signal_connect (scale, "value-changed", G_CALLBACK (scale_changed), widget);
g_object_bind_property_full (gtk_range_get_adjustment (GTK_RANGE (scale)), "value",
widget, "scale",
G_BINDING_BIDIRECTIONAL,
transform_to,
transform_from,
NULL, NULL);
}
if (!gtk_widget_get_visible (window))

2
gsk/gl/gskglrenderjob.c
View File

@ -260,6 +260,7 @@ node_supports_2d_transform (const GskRenderNode *node)
case GSK_OPACITY_NODE:
case GSK_COLOR_MATRIX_NODE:
case GSK_TEXTURE_NODE:
case GSK_TEXTURE_SCALE_NODE:
case GSK_CROSS_FADE_NODE:
case GSK_LINEAR_GRADIENT_NODE:
case GSK_REPEATING_LINEAR_GRADIENT_NODE:
@ -3643,6 +3644,7 @@ gsk_gl_render_job_visit_texture_scale_node (GskGLRenderJob *job,
GskTextureKey key;
gsk_gl_render_job_untransform_bounds (job, &job->current_clip->rect.bounds, &clip_rect);
if (!graphene_rect_intersection (bounds, &clip_rect, &clip_rect))
return;