forked from external/yambar
130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
#include "string.h"
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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struct private {
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char *text;
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struct font *font;
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struct rgba foreground;
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};
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static void
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exposable_destroy(struct exposable *exposable)
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{
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struct private *e = exposable->private;
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free(e->text);
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free(e);
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exposable_default_destroy(exposable);
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}
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static int
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begin_expose(struct exposable *exposable, cairo_t *cr)
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{
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const struct private *e = exposable->private;
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cairo_scaled_font_t *scaled = font_use_in_cairo(e->font, cr);
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cairo_text_extents_t extents;
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cairo_scaled_font_text_extents(scaled, e->text, &extents);
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exposable->width = (exposable->particle->left_margin +
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extents.x_advance +
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exposable->particle->right_margin);
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return exposable->width;
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}
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static void
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expose(const struct exposable *exposable, cairo_t *cr, int x, int y, int height)
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{
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const struct private *e = exposable->private;
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cairo_scaled_font_t *scaled = font_use_in_cairo(e->font, cr);
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cairo_text_extents_t extents;
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cairo_scaled_font_text_extents(scaled, e->text, &extents);
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cairo_glyph_t *glyphs = NULL;
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cairo_text_cluster_t *clusters = NULL;
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cairo_text_cluster_flags_t cluster_flags;
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int num_glyphs, num_clusters;
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cairo_scaled_font_text_to_glyphs(
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scaled,
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x + exposable->particle->left_margin,
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(double)y + ((double)height - extents.y_bearing) / 2 + font_y_offset(e->font),
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e->text, strlen(e->text), &glyphs, &num_glyphs,
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&clusters, &num_clusters, &cluster_flags);
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const struct deco *deco = exposable->particle->deco;
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if (deco != NULL)
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deco->expose(deco, cr, x, y, exposable->width, height);
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cairo_set_source_rgba(cr,
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e->foreground.red,
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e->foreground.green,
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e->foreground.blue,
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e->foreground.alpha);
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_show_text_glyphs(cr, e->text, strlen(e->text),
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glyphs, num_glyphs,
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clusters, num_clusters, cluster_flags);
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cairo_glyph_free(glyphs);
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cairo_text_cluster_free(clusters);
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/*cairo_scaled_font_destroy(scaled);*/
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}
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static struct exposable *
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instantiate(const struct particle *particle, const struct tag_set *tags)
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{
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const struct private *p = particle->private;
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struct private *e = malloc(sizeof(*e));
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e->text = tags_expand_template(p->text, tags);
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e->font = p->font;
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e->foreground = p->foreground;
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char *on_click = tags_expand_template(particle->on_click_template, tags);
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struct exposable *exposable = exposable_common_new(particle, on_click);
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exposable->private = e;
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exposable->destroy = &exposable_destroy;
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exposable->begin_expose = &begin_expose;
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exposable->expose = &expose;
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free(on_click);
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return exposable;
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}
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static void
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particle_destroy(struct particle *particle)
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{
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struct private *p = particle->private;
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font_destroy(p->font);
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free(p->text);
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free(p);
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particle_default_destroy(particle);
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}
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struct particle *
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particle_string_new(const char *text, struct font *font,
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struct rgba foreground, int left_margin, int right_margin,
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const char *on_click_template)
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{
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struct private *p = malloc(sizeof(*p));
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p->text = strdup(text);
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p->font = font;
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p->foreground = foreground;
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struct particle *particle = particle_common_new(
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left_margin, right_margin, on_click_template);
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particle->private = p;
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particle->destroy = &particle_destroy;
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particle->instantiate = &instantiate;
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return particle;
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}
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