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This commit is contained in:
Daiki Ueno
2010-06-11 07:37:18 +09:00
parent 5f0c22b125
commit 174b1b3f4a
1 changed files with 148 additions and 131 deletions
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261
eek/eek-clutter-key-actor.c
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@ -1,4 +1,5 @@
/*
* Copyright (C) 2006 Sergey V. Udaltsov <svu@gnome.org>
* Copyright (C) 2010 Daiki Ueno <ueno@unixuser.org>
* Copyright (C) 2010 Red Hat, Inc.
*
@ -23,6 +24,8 @@
* @short_description: Custom #ClutterActor drawing a key shape
*/
#include <cogl/cogl.h>
#include <cogl/cogl-pango.h>
#include <math.h>
#ifdef HAVE_CONFIG_H
@ -30,8 +33,6 @@
#endif /* HAVE_CONFIG_H */
#include "eek-clutter-key-actor.h"
#include "eek-keysym.h"
#include <cogl/cogl.h>
#include <cogl/cogl-pango.h>
#define noKBDRAW_DEBUG
@ -66,6 +67,11 @@ static void draw_key_on_layout (EekKey *key,
PangoLayout *layout);
static void key_enlarge (ClutterActor *actor);
static void key_shrink (ClutterActor *actor);
static void draw_rounded_polygon (cairo_t *cr,
gboolean filled,
gdouble radius,
EekPoint *points,
gint num_points);
static void
eek_clutter_key_actor_real_paint (ClutterActor *self)
@ -101,7 +107,8 @@ eek_clutter_key_actor_real_paint (ClutterActor *self)
/* FIXME: Color should be configurable through a property. */
cogl_color_set_from_4ub (&color, 0x80, 0x00, 0x00, 0xff);
clutter_actor_get_allocation_geometry (self, &geom);
cogl_pango_render_layout (layout,
cogl_pango_render_layout
(layout,
(geom.width - logical_rect.width / PANGO_SCALE) / 2,
(geom.height - logical_rect.height / PANGO_SCALE) / 2,
&color,
@ -302,6 +309,134 @@ key_shrink (ClutterActor *actor)
NULL);
}
static ClutterActor *
create_texture_for_key (EekKey *key)
{
ClutterActor *texture;
cairo_t *cr;
cairo_pattern_t *pat;
EekOutline *outline;
EekBounds bounds;
outline = eek_key_get_outline (EEK_KEY(key));
eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
texture = clutter_cairo_texture_new (bounds.width, bounds.height);
cr = clutter_cairo_texture_create (CLUTTER_CAIRO_TEXTURE(texture));
cairo_set_line_width (cr, 1);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, 256.0);
cairo_pattern_add_color_stop_rgba (pat, 1, 0.5, 0.5, 0.5, 1);
cairo_pattern_add_color_stop_rgba (pat, 0, 1, 1, 1, 1);
cairo_set_source (cr, pat);
draw_rounded_polygon (cr,
TRUE,
outline->corner_radius,
outline->points,
outline->num_points);
cairo_pattern_destroy (pat);
cairo_set_source_rgba (cr, 0.3, 0.3, 0.3, 0.5);
draw_rounded_polygon (cr,
FALSE,
outline->corner_radius,
outline->points,
outline->num_points);
cairo_destroy (cr);
return texture;
}
static ClutterActor *
get_texture (EekClutterKeyActor *actor)
{
ClutterActor *texture;
EekOutline *outline;
if (!texture_cache.outline_textures)
texture_cache.outline_textures = g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
g_free);
outline = eek_key_get_outline (actor->priv->key);
texture = g_hash_table_lookup (texture_cache.outline_textures, outline);
if (texture == NULL) {
texture = create_texture_for_key (actor->priv->key);
g_hash_table_insert (texture_cache.outline_textures, outline, texture);
} else
texture = clutter_clone_new (texture);
texture_cache.outline_textures_ref_count++;
return texture;
}
static void
draw_text_on_layout (PangoLayout *layout,
const gchar *text,
gdouble scale)
{
PangoFontDescription *font_desc;
#define FONT_SIZE (720 * 50)
/* FIXME: Font should be configurable through a property. */
font_desc = pango_font_description_from_string ("Sans");
pango_font_description_set_size (font_desc, FONT_SIZE * scale);
pango_layout_set_font_description (layout, font_desc);
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
pango_layout_set_text (layout, text, -1);
pango_font_description_free (font_desc);
}
static void
draw_key_on_layout (EekKey *key,
PangoLayout *layout)
{
PangoLayout *buffer;
PangoRectangle logical_rect = { 0, };
EekBounds bounds;
guint keysym;
const gchar *label, *empty_label = "";
gdouble scale_x, scale_y;
eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
keysym = eek_key_get_keysym (key);
if (keysym == EEK_INVALID_KEYSYM)
return;
label = eek_keysym_to_string (keysym);
if (!label)
label = empty_label;
/* Compute the layout extents. */
buffer = pango_layout_copy (layout);
draw_text_on_layout (buffer, label, 1.0);
pango_layout_get_extents (buffer, NULL, &logical_rect);
scale_x = scale_y = 1.0;
if (PANGO_PIXELS(logical_rect.width) > bounds.width)
scale_x = bounds.width / PANGO_PIXELS(logical_rect.width);
if (PANGO_PIXELS(logical_rect.height) > bounds.height)
scale_y = bounds.height / PANGO_PIXELS(logical_rect.height);
g_object_unref (buffer);
/* Actually draw on the layout */
draw_text_on_layout (layout,
label,
(scale_x < scale_y ? scale_x : scale_y) * 0.8);
if (label != empty_label)
g_free ((gpointer)label);
}
/*
* The functions below are borrowed from
* libgnomekbd/gkbd-keyboard-drawing.c.
* Copyright (C) 2006 Sergey V. Udaltsov <svu@gnome.org>
*
* length(), point_line_distance(), normal_form(), inverse(), multiply(),
* intersect(), rounded_corner(), draw_rounded_polygon()
*/
static gdouble
length (gdouble x, gdouble y)
{
@ -469,7 +604,7 @@ rounded_corner (cairo_t * cr,
cairo_line_to (cr, cx, cy);
}
void
static void
draw_rounded_polygon (cairo_t *cr,
gboolean filled,
gdouble radius,
@ -508,121 +643,3 @@ draw_rounded_polygon (cairo_t *cr,
else
cairo_stroke (cr);
}
static ClutterActor *
create_texture_for_key (EekKey *key)
{
ClutterActor *texture;
cairo_t *cr;
cairo_pattern_t *pat;
EekOutline *outline;
EekBounds bounds;
outline = eek_key_get_outline (EEK_KEY(key));
eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
texture = clutter_cairo_texture_new (bounds.width, bounds.height);
cr = clutter_cairo_texture_create (CLUTTER_CAIRO_TEXTURE(texture));
cairo_set_line_width (cr, 1);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, 256.0);
cairo_pattern_add_color_stop_rgba (pat, 1, 0.5, 0.5, 0.5, 1);
cairo_pattern_add_color_stop_rgba (pat, 0, 1, 1, 1, 1);
cairo_set_source (cr, pat);
draw_rounded_polygon (cr,
TRUE,
outline->corner_radius,
outline->points,
outline->num_points);
cairo_pattern_destroy (pat);
cairo_set_source_rgba (cr, 0.3, 0.3, 0.3, 0.5);
draw_rounded_polygon (cr,
FALSE,
outline->corner_radius,
outline->points,
outline->num_points);
cairo_destroy (cr);
return texture;
}
static ClutterActor *
get_texture (EekClutterKeyActor *actor)
{
ClutterActor *texture;
EekOutline *outline;
if (!texture_cache.outline_textures)
texture_cache.outline_textures = g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
g_free);
outline = eek_key_get_outline (actor->priv->key);
texture = g_hash_table_lookup (texture_cache.outline_textures, outline);
if (texture == NULL) {
texture = create_texture_for_key (actor->priv->key);
g_hash_table_insert (texture_cache.outline_textures, outline, texture);
} else
texture = clutter_clone_new (texture);
texture_cache.outline_textures_ref_count++;
return texture;
}
static void
draw_text_on_layout (PangoLayout *layout,
const gchar *text,
gdouble scale)
{
PangoFontDescription *font_desc;
#define FONT_SIZE (720 * 50)
/* FIXME: Font should be configurable through a property. */
font_desc = pango_font_description_from_string ("Sans");
pango_font_description_set_size (font_desc, FONT_SIZE * scale);
pango_layout_set_font_description (layout, font_desc);
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
pango_layout_set_text (layout, text, -1);
pango_font_description_free (font_desc);
}
static void
draw_key_on_layout (EekKey *key,
PangoLayout *layout)
{
PangoLayout *buffer;
PangoRectangle logical_rect = { 0, };
EekBounds bounds;
guint keysym;
const gchar *label, *empty_label = "";
gdouble scale_x, scale_y;
eek_element_get_bounds (EEK_ELEMENT(key), &bounds);
keysym = eek_key_get_keysym (key);
if (keysym == EEK_INVALID_KEYSYM)
return;
label = eek_keysym_to_string (keysym);
if (!label)
label = empty_label;
/* Compute the layout extents. */
buffer = pango_layout_copy (layout);
draw_text_on_layout (buffer, label, 1.0);
pango_layout_get_extents (buffer, NULL, &logical_rect);
scale_x = scale_y = 1.0;
if (PANGO_PIXELS(logical_rect.width) > bounds.width)
scale_x = bounds.width / PANGO_PIXELS(logical_rect.width);
if (PANGO_PIXELS(logical_rect.height) > bounds.height)
scale_y = bounds.height / PANGO_PIXELS(logical_rect.height);
g_object_unref (buffer);
/* Actually draw on the layout */
draw_text_on_layout (layout,
label,
(scale_x < scale_y ? scale_x : scale_y) * 0.8);
if (label != empty_label)
g_free ((gpointer)label);
}