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#include <cairo/cairo.h>
#include <glib.h>
#include <pango/pangocairo.h>
#include <pango/pango.h>
#include <wchar.h>
#include "../entry.h"
#include "../log.h"
#include "../nelem.h"
void entry_backend_init(struct entry *entry, uint32_t *width, uint32_t *height, uint32_t scale)
{
cairo_t *cr = entry->cairo[0].cr;
/* Setup Pango. */
log_debug("Creating Pango context.\n");
PangoContext *context = pango_cairo_create_context(cr);
log_debug("Creating Pango font description.\n");
PangoFontDescription *font_description =
pango_font_description_from_string(entry->font_name);
pango_font_description_set_size(
font_description,
entry->font_size * PANGO_SCALE);
pango_context_set_font_description(context, font_description);
pango_font_description_free(font_description);
entry->backend.layout = pango_layout_new(context);
log_debug("Setting Pango text.\n");
pango_layout_set_text(entry->backend.layout, "run: ", -1);
int prompt_width;
int prompt_height;
log_debug("Get Pango pixel size.\n");
pango_layout_get_pixel_size(entry->backend.layout, &prompt_width, &prompt_height);
log_debug("First Pango draw.\n");
pango_cairo_update_layout(cr, entry->backend.layout);
/* Draw the prompt now, as this only needs to be done once */
struct color color = entry->foreground_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
pango_cairo_show_layout(cr, entry->backend.layout);
/* Move and clip so we don't draw over the prompt */
cairo_translate(cr, prompt_width, 0);
*width -= prompt_width;
cairo_rectangle(cr, 0, 0, *width, *height);
cairo_clip(cr);
entry->backend.context = context;
}
void entry_backend_destroy(struct entry *entry)
{
g_object_unref(entry->backend.layout);
g_object_unref(entry->backend.context);
}
void entry_backend_update(struct entry *entry)
{
cairo_t *cr = entry->cairo[entry->index].cr;
PangoLayout *layout = entry->backend.layout;
pango_layout_set_text(layout, entry->input_mb, -1);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
int width;
int height;
pango_layout_get_size(entry->backend.layout, &width, &height);
for (size_t i = 0; i < 5; i++) {
cairo_translate(cr, 0, (int)(height / PANGO_SCALE));
const char *str;
if (i < entry->results.count) {
str = entry->results.buf[i];
} else {
str = "";
}
pango_layout_set_text(layout, str, -1);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
}
}
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