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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_init(struct entry *entry, uint32_t width, uint32_t height, uint32_t scale)
{
entry->image.width = width;
entry->image.height = height;
width /= scale;
height /= scale;
/*
* Create the cairo surface and context we'll be using.
*/
cairo_surface_t *surface = cairo_image_surface_create(
CAIRO_FORMAT_ARGB32,
width * scale,
height * scale
);
cairo_surface_set_device_scale(surface, scale, scale);
cairo_t *cr = cairo_create(surface);
/* Draw the outer outline */
struct color color = entry->border.outline_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within this outline */
cairo_translate(
cr,
entry->border.outline_width,
entry->border.outline_width);
width -= 2 * entry->border.outline_width;
height -= 2 * entry->border.outline_width;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Draw the border */
color = entry->border.color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within the border */
cairo_translate(cr, entry->border.width, entry->border.width);
width -= 2 * entry->border.width;
height -= 2 * entry->border.width;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Draw the inner outline */
color = entry->border.outline_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within this outline */
cairo_translate(
cr,
entry->border.outline_width,
entry->border.outline_width);
width -= 2 * entry->border.outline_width;
height -= 2 * entry->border.outline_width;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Draw the entry background */
color = entry->background_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within the specified padding */
cairo_translate(cr, entry->padding, entry->padding);
width -= 2 * entry->padding;
height -= 2 * entry->padding;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(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->pango.prompt_layout = pango_layout_new(context);
log_debug("Setting Pango text.\n");
pango_layout_set_text(entry->pango.prompt_layout, "run: ", -1);
int prompt_width;
int prompt_height;
log_debug("Get Pango pixel size.\n");
pango_layout_get_pixel_size(entry->pango.prompt_layout, &prompt_width, &prompt_height);
log_debug("First Pango draw.\n");
pango_cairo_update_layout(cr, entry->pango.prompt_layout);
/* Draw the prompt now, as this only needs to be done once */
color = entry->foreground_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
pango_cairo_show_layout(cr, entry->pango.prompt_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);
log_debug("Creating Pango layout.\n");
entry->pango.entry_layout = pango_layout_new(context);
pango_layout_set_text(entry->pango.entry_layout, "", -1);
for (size_t i = 0; i < 5; i++) {
PangoLayout *layout = pango_layout_new(context);
pango_layout_set_text(layout, "", -1);
entry->pango.result_layouts[i] = layout;
}
entry->pango.context = context;
entry->cairo.surface = surface;
entry->cairo.cr = cr;
entry->image.buffer = cairo_image_surface_get_data(surface);
}
void entry_destroy(struct entry *entry)
{
for (size_t i = 0; i < 5; i++) {
g_object_unref(entry->pango.result_layouts[i]);
}
g_object_unref(entry->pango.entry_layout);
g_object_unref(entry->pango.prompt_layout);
g_object_unref(entry->pango.context);
cairo_destroy(entry->cairo.cr);
cairo_surface_destroy(entry->cairo.surface);
}
void entry_update(struct entry *entry)
{
cairo_t *cr = entry->cairo.cr;
cairo_save(cr);
entry->image.redraw = true;
/* Clear the image. */
struct color color = entry->background_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Draw our text. */
color = entry->foreground_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
pango_layout_set_text(entry->pango.entry_layout, entry->input_mb, -1);
pango_cairo_update_layout(cr, entry->pango.entry_layout);
pango_cairo_show_layout(cr, entry->pango.entry_layout);
for (size_t i = 0; i < 5; i++) {
cairo_translate(cr, 0, 50);
PangoLayout *layout = entry->pango.result_layouts[i];
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);
}
cairo_restore(cr);
}
void entry_set_scale(struct entry *entry, uint32_t scale)
{
cairo_surface_set_device_scale(entry->cairo.surface, scale, scale);
}
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