mirror of
https://github.com/labwc/labwc.git
synced 2025-10-29 05:40:24 -04:00
110 lines
3 KiB
C
110 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
#include <cairo.h>
|
|
#include <drm_fourcc.h>
|
|
#include <pango/pangocairo.h>
|
|
#include <wlr/render/wlr_renderer.h>
|
|
#include <wlr/util/box.h>
|
|
#include <wlr/util/log.h>
|
|
#include "common/font.h"
|
|
#include "labwc.h"
|
|
#include "buffer.h"
|
|
|
|
static PangoRectangle
|
|
font_extents(struct font *font, const char *string)
|
|
{
|
|
PangoRectangle rect;
|
|
cairo_surface_t *surface;
|
|
cairo_t *c;
|
|
PangoLayout *layout;
|
|
|
|
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 1, 1);
|
|
c = cairo_create(surface);
|
|
layout = pango_cairo_create_layout(c);
|
|
PangoFontDescription *desc = pango_font_description_new();
|
|
pango_font_description_set_family(desc, font->name);
|
|
pango_font_description_set_size(desc, font->size * PANGO_SCALE);
|
|
|
|
pango_layout_set_font_description(layout, desc);
|
|
pango_layout_set_text(layout, string, -1);
|
|
pango_layout_set_single_paragraph_mode(layout, TRUE);
|
|
pango_layout_set_width(layout, -1);
|
|
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_MIDDLE);
|
|
pango_layout_get_extents(layout, NULL, &rect);
|
|
pango_extents_to_pixels(&rect, NULL);
|
|
|
|
/* we put a 2 px edge on each side - because Openbox does it :) */
|
|
rect.width += 4;
|
|
|
|
cairo_destroy(c);
|
|
cairo_surface_destroy(surface);
|
|
pango_font_description_free(desc);
|
|
g_object_unref(layout);
|
|
return rect;
|
|
}
|
|
|
|
int
|
|
font_height(struct font *font)
|
|
{
|
|
PangoRectangle rectangle = font_extents(font, "abcdefg");
|
|
return rectangle.height;
|
|
}
|
|
|
|
void
|
|
font_buffer_update(struct lab_data_buffer **buffer, int max_width,
|
|
const char *text, struct font *font, float *color, double scale)
|
|
{
|
|
if (*buffer) {
|
|
wlr_buffer_drop(&(*buffer)->base);
|
|
*buffer = NULL;
|
|
}
|
|
font_buffer_create(buffer, max_width, text, font, color, scale);
|
|
}
|
|
|
|
void
|
|
font_buffer_create(struct lab_data_buffer **buffer, int max_width,
|
|
const char *text, struct font *font, float *color, double scale)
|
|
{
|
|
if (!text || !*text) {
|
|
return;
|
|
}
|
|
|
|
PangoRectangle rect = font_extents(font, text);
|
|
if (max_width && rect.width > max_width) {
|
|
rect.width = max_width;
|
|
}
|
|
*buffer = buffer_create_cairo(rect.width, rect.height, scale, true);
|
|
if (!*buffer) {
|
|
wlr_log(WLR_ERROR, "Failed to create font buffer of size %dx%d",
|
|
rect.width, rect.height);
|
|
return;
|
|
}
|
|
|
|
cairo_t *cairo = (*buffer)->cairo;
|
|
cairo_surface_t *surf = cairo_get_target(cairo);
|
|
|
|
cairo_set_source_rgba(cairo, color[0], color[1], color[2], color[3]);
|
|
cairo_move_to(cairo, 0, 0);
|
|
|
|
PangoLayout *layout = pango_cairo_create_layout(cairo);
|
|
pango_layout_set_width(layout, rect.width * PANGO_SCALE);
|
|
pango_layout_set_text(layout, text, -1);
|
|
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
|
|
|
|
PangoFontDescription *desc = pango_font_description_new();
|
|
pango_font_description_set_family(desc, font->name);
|
|
pango_font_description_set_size(desc, font->size * PANGO_SCALE);
|
|
pango_layout_set_font_description(layout, desc);
|
|
pango_font_description_free(desc);
|
|
pango_cairo_update_layout(cairo, layout);
|
|
|
|
pango_cairo_show_layout(cairo, layout);
|
|
g_object_unref(layout);
|
|
|
|
cairo_surface_flush(surf);
|
|
}
|
|
|
|
void
|
|
font_finish(void)
|
|
{
|
|
pango_cairo_font_map_set_default(NULL);
|
|
}
|