Files
gtk/demos/font-explorer/fontcontrols.c
Matthias Clasen f7c4b26c59 Make a standalone font explorer
This is the font features demo, broken out as
a standalone application and cleaned up.
2022-07-06 13:45:11 -04:00

272 lines
7.9 KiB
C

#include "fontcontrols.h"
#include "rangeedit.h"
#include <gtk/gtk.h>
#include <hb-ot.h>
enum {
PROP_SIZE = 1,
PROP_LETTERSPACING,
PROP_LINE_HEIGHT,
PROP_FOREGROUND,
PROP_BACKGROUND,
PROP_DISABLE_SIZE,
NUM_PROPERTIES
};
static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
struct _FontControls
{
GtkWidget parent;
GtkAdjustment *size_adjustment;
GtkAdjustment *letterspacing_adjustment;
GtkAdjustment *line_height_adjustment;
GtkColorButton *foreground;
GtkColorButton *background;
GSimpleAction *reset_action;
gboolean disable_size;
};
struct _FontControlsClass
{
GtkWidgetClass parent_class;
};
G_DEFINE_TYPE(FontControls, font_controls, GTK_TYPE_WIDGET);
static void
size_changed (GtkAdjustment *adjustment,
FontControls *self)
{
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SIZE]);
g_simple_action_set_enabled (self->reset_action, TRUE);
}
static void
letterspacing_changed (GtkAdjustment *adjustment,
FontControls *self)
{
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_LETTERSPACING]);
g_simple_action_set_enabled (self->reset_action, TRUE);
}
static void
line_height_changed (GtkAdjustment *adjustment,
FontControls *self)
{
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_LINE_HEIGHT]);
g_simple_action_set_enabled (self->reset_action, TRUE);
}
static void
color_set (GtkColorButton *button,
GParamSpec *pspec,
FontControls *self)
{
if (button == self->foreground)
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_FOREGROUND]);
else
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_BACKGROUND]);
g_simple_action_set_enabled (self->reset_action, TRUE);
}
static void
swap_colors (GtkButton *button,
FontControls *self)
{
GdkRGBA fg;
GdkRGBA bg;
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self->foreground), &fg);
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self->background), &bg);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self->foreground), &bg);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self->background), &fg);
}
static void
reset (GSimpleAction *action,
GVariant *parameter,
FontControls *self)
{
gtk_adjustment_set_value (self->size_adjustment, 12.);
gtk_adjustment_set_value (self->letterspacing_adjustment, 0.);
gtk_adjustment_set_value (self->line_height_adjustment, 1.);
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self->foreground), &(GdkRGBA){0., 0., 0., 1.0 });
gtk_color_chooser_set_rgba (GTK_COLOR_CHOOSER (self->background), &(GdkRGBA){1., 1., 1., 1.0 });
g_simple_action_set_enabled (self->reset_action, FALSE);
}
static void
font_controls_init (FontControls *self)
{
gtk_widget_init_template (GTK_WIDGET (self));
self->reset_action = g_simple_action_new ("reset", NULL);
g_simple_action_set_enabled (self->reset_action, FALSE);
g_signal_connect (self->reset_action, "activate", G_CALLBACK (reset), self);
}
static void
font_controls_dispose (GObject *object)
{
gtk_widget_clear_template (GTK_WIDGET (object), FONT_CONTROLS_TYPE);
G_OBJECT_CLASS (font_controls_parent_class)->dispose (object);
}
static void
font_controls_finalize (GObject *object)
{
//FontControls *self = FONT_CONTROLS (object);
G_OBJECT_CLASS (font_controls_parent_class)->finalize (object);
}
static void
font_controls_set_property (GObject *object,
unsigned int prop_id,
const GValue *value,
GParamSpec *pspec)
{
FontControls *self = FONT_CONTROLS (object);
switch (prop_id)
{
case PROP_SIZE:
gtk_adjustment_set_value (self->size_adjustment, g_value_get_float (value));
break;
case PROP_DISABLE_SIZE:
self->disable_size = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
font_controls_get_property (GObject *object,
unsigned int prop_id,
GValue *value,
GParamSpec *pspec)
{
FontControls *self = FONT_CONTROLS (object);
switch (prop_id)
{
case PROP_SIZE:
g_value_set_float (value, gtk_adjustment_get_value (self->size_adjustment));
break;
case PROP_LETTERSPACING:
g_value_set_int (value, (int) gtk_adjustment_get_value (self->letterspacing_adjustment));
break;
case PROP_LINE_HEIGHT:
g_value_set_float (value, gtk_adjustment_get_value (self->line_height_adjustment));
break;
case PROP_FOREGROUND:
{
GdkRGBA rgba;
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self->foreground), &rgba);
g_value_set_boxed (value, &rgba);
}
break;
case PROP_BACKGROUND:
{
GdkRGBA rgba;
gtk_color_chooser_get_rgba (GTK_COLOR_CHOOSER (self->background), &rgba);
g_value_set_boxed (value, &rgba);
}
break;
case PROP_DISABLE_SIZE:
g_value_set_boolean (value, self->disable_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
font_controls_class_init (FontControlsClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
g_type_ensure (RANGE_EDIT_TYPE);
object_class->dispose = font_controls_dispose;
object_class->finalize = font_controls_finalize;
object_class->get_property = font_controls_get_property;
object_class->set_property = font_controls_set_property;
properties[PROP_SIZE] =
g_param_spec_float ("size", "", "",
0., 100., 12.,
G_PARAM_READABLE);
properties[PROP_LETTERSPACING] =
g_param_spec_int ("letterspacing", "", "",
-G_MAXINT, G_MAXINT, 0,
G_PARAM_READABLE);
properties[PROP_LINE_HEIGHT] =
g_param_spec_float ("line-height", "", "",
0., 100., 1.,
G_PARAM_READABLE);
properties[PROP_FOREGROUND] =
g_param_spec_boxed ("foreground", "", "",
GDK_TYPE_RGBA,
G_PARAM_READABLE);
properties[PROP_BACKGROUND] =
g_param_spec_boxed ("background", "", "",
GDK_TYPE_RGBA,
G_PARAM_READABLE);
properties[PROP_DISABLE_SIZE] =
g_param_spec_boolean ("disable-size", "", "",
FALSE,
G_PARAM_READWRITE);
g_object_class_install_properties (G_OBJECT_CLASS (class), NUM_PROPERTIES, properties);
gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (class),
"/org/gtk/fontexplorer/fontcontrols.ui");
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), FontControls, size_adjustment);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), FontControls, letterspacing_adjustment);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), FontControls, line_height_adjustment);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), FontControls, foreground);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), FontControls, background);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), size_changed);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), letterspacing_changed);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), line_height_changed);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), color_set);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), swap_colors);
gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (class), "fontcontrols");
}
FontControls *
font_controls_new (void)
{
return g_object_new (FONT_CONTROLS_TYPE, NULL);
}
GAction *
font_controls_get_reset_action (FontControls *self)
{
return G_ACTION (self->reset_action);
}