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eeshow/gui-over.c (overlay_draw): use Pango

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This commit is contained in:
Werner Almesberger 2016-08-06 13:26:59 -03:00
parent 3b5daecbd6
commit 45726be08f
1 changed files with 18 additions and 7 deletions
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25
eeshow/gui-over.c
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@ -23,6 +23,7 @@
#include <math.h> #include <math.h>
#include <cairo/cairo.h> #include <cairo/cairo.h>
#include <pango/pangocairo.h>
#include "util.h" #include "util.h"
#include "gui-aoi.h" #include "gui-aoi.h"
@ -66,14 +67,21 @@ static void rrect(cairo_t *cr, int x, int y, int w, int h, int r)
struct overlay *overlay_draw(struct overlay *over, cairo_t *cr, int *x, int *y) struct overlay *overlay_draw(struct overlay *over, cairo_t *cr, int *x, int *y)
{ {
cairo_text_extents_t ext;
int w, h; int w, h;
cairo_set_font_size(cr, OVER_FONT_SIZE); PangoLayout *layout;
cairo_text_extents(cr, over->s, &ext); PangoFontDescription *desc;
PangoRectangle ink_rect;
w = ext.width + 2 * OVER_BORDER; layout = pango_cairo_create_layout(cr);
h = ext.height + 2 * OVER_BORDER; pango_layout_set_text(layout, over->s, -1);
desc = pango_font_description_from_string("Helvetica Bold 12");
pango_layout_set_font_description(layout, desc);
pango_font_description_free(desc);
pango_layout_get_extents(layout, &ink_rect, NULL);
w = ink_rect.width / PANGO_SCALE + 2 * OVER_BORDER;
h = ink_rect.height / PANGO_SCALE + 2 * OVER_BORDER;
rrect(cr, *x, *y, w, h, OVER_RADIUS); rrect(cr, *x, *y, w, h, OVER_RADIUS);
@ -84,8 +92,11 @@ struct overlay *overlay_draw(struct overlay *over, cairo_t *cr, int *x, int *y)
cairo_stroke(cr); cairo_stroke(cr);
cairo_set_source_rgb(cr, 0, 0, 0); cairo_set_source_rgb(cr, 0, 0, 0);
cairo_move_to(cr, *x + OVER_BORDER, *y + OVER_BORDER + ext.height); cairo_move_to(cr, *x - ink_rect.x / PANGO_SCALE + OVER_BORDER,
cairo_show_text(cr, over->s); *y - ink_rect.y / PANGO_SCALE + OVER_BORDER + 0*ink_rect.height);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
if (over->hover || over->click) { if (over->hover || over->click) {
struct aoi aoi = { struct aoi aoi = {