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#include <arpa/inet.h>
#include <cairo/cairo.h>
#include <glib.h>
#include <pango/pangocairo.h>
#include <pango/pango.h>
#include <wchar.h>
#include "client.h"
#include "entry.h"
#include "log.h"
#include "nelem.h"
static void calculate_font_extents(struct entry *entry, uint32_t scale);
void entry_init(struct entry *entry, uint32_t scale)
{
calculate_font_extents(entry, scale);
struct color color;
/*
* Cairo uses native 32 bit integers for pixels, so if this processor
* is little endian we have to tell OpenGL to swizzle the texture.
*/
if (htonl(0xFFu) != 0xFFu) {
entry->image.swizzle = true;
}
/*
* Create the cairo surface and context we'll be using.
*/
cairo_surface_t *surface = cairo_image_surface_create(
CAIRO_FORMAT_ARGB32,
entry->surface.width,
entry->surface.height
);
cairo_surface_set_device_scale(surface, scale, scale);
cairo_t *cr = cairo_create(surface);
/* Running size of current drawing area. */
int32_t width = entry->surface.width / scale;
int32_t height = entry->surface.height / scale;
/* Draw the outer 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 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);
/*
* Move the cursor back up, so that Pango draws in the correct place if
* we're doing a tight layout.
*/
cairo_translate(cr, -entry->text_bounds.x, -entry->text_bounds.y);
/* Setup Pango. */
PangoContext *context = pango_cairo_create_context(cr);
PangoLayout *layout = pango_layout_new(context);
pango_layout_set_text(layout, "", -1);
PangoFontDescription *font_description =
pango_font_description_from_string(entry->font_name);
pango_font_description_set_size(
font_description,
entry->font_size * PANGO_SCALE);
pango_layout_set_font_description(layout, font_description);
pango_font_description_free(font_description);
entry->pangocairo.surface = surface;
entry->pangocairo.cr = cr;
entry->pangocairo.layout = layout;
entry->image.width = entry->surface.width;
entry->image.height = entry->surface.height;
entry->image.buffer = cairo_image_surface_get_data(surface);
}
void entry_update(struct entry *entry)
{
cairo_t *cr = entry->pangocairo.cr;
PangoLayout *layout = entry->pangocairo.layout;
/* Redraw the background. */
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 with Pango. */
color = entry->foreground_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
//const wchar_t *src = entry->password;
//wcsrtombs(entry->password_mb, &src, N_ELEM(entry->password_mb), NULL);
size_t len = 0;
for (unsigned int i = 0; i < entry->password_length; i++) {
len += wcrtomb(entry->password_mb + len, entry->password_character, NULL);
}
entry->password_mb[len] = '\0';
fprintf(stderr, "%s\n", entry->password_mb);
pango_layout_set_text(layout, entry->password_mb, -1);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
entry->image.redraw = true;
}
void entry_set_scale(struct entry *entry, uint32_t scale)
{
cairo_surface_set_device_scale(entry->pangocairo.surface, scale, scale);
}
void calculate_font_extents(struct entry *entry, uint32_t scale)
{
/*
* To calculate the size of the password box, we do the following:
* 1. Load the font we're going to use.
* 2. Create a string of the desired length using the specified
* password character, e.g. "·······".
* 3. Render the string with Pango in some abstract layout.
* 4. Measure the bounding box of the layout.
* 5. Add on the size of the border / outline.
*/
PangoFontMap *font_map = pango_cairo_font_map_get_default();
PangoContext *context = pango_font_map_create_context(font_map);
PangoLayout *layout = pango_layout_new(context);
PangoFontDescription *font_description =
pango_font_description_from_string(entry->font_name);
pango_font_description_set_size(
font_description,
entry->font_size * PANGO_SCALE);
pango_layout_set_font_description(layout, font_description);
PangoFont *font =
pango_font_map_load_font(font_map, context, font_description);
pango_font_description_free(font_description);
font_description = pango_font_describe(font);
log_info("Using font: %s\n",
pango_font_description_to_string(font_description));
g_object_unref(font);
char *buf = calloc(MAX_PASSWORD_LENGTH, 4);
size_t len = 0;
for (unsigned int i = 0; i < entry->num_characters; i++) {
len += wcrtomb(buf + len, entry->password_character, NULL);
}
buf[len] = '\0';
pango_layout_set_text(layout,buf, -1);
free(buf);
PangoRectangle rect;
if (entry->tight_layout) {
pango_layout_get_pixel_extents(layout, &rect, NULL);
} else {
pango_layout_get_pixel_extents(layout, NULL, &rect);
}
int width = rect.width;
int height = rect.height;
width += 2 * (
entry->border.width
+ 2 * entry->border.outline_width
+ entry->padding
);
height += 2 * (
entry->border.width
+ 2 * entry->border.outline_width
+ entry->padding
);
entry->surface.width = width * scale;
entry->surface.height = height * scale;
entry->text_bounds = rect;
g_object_unref(layout);
g_object_unref(context);
}
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