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/*
* render.c
*
* Created by buzzert <buzzert@buzzert.net> 2019-01-18
*/
#include "render.h"
#include "resources.h"
#include <gio/gio.h>
static const double kLogoBackgroundWidth = 500.0;
GBytes* get_data_for_resource(const char *resource_path)
{
GBytes *result = NULL;
GError *error = NULL;
GResource *resource = as_get_resource();
result = g_resource_lookup_data(
resource,
resource_path,
G_RESOURCE_LOOKUP_FLAGS_NONE,
&error
);
if (error != NULL) {
fprintf(stderr, "Error loading resource %s\n", resource_path);
}
return result;
}
void draw_logo(saver_state_t *state)
{
if (state->logo_svg_handle == NULL) {
GError *error = NULL;
GBytes *bytes = get_data_for_resource("/resources/logo.svg");
gsize size = 0;
gconstpointer data = g_bytes_get_data(bytes, &size);
state->logo_svg_handle = rsvg_handle_new_from_data(data, size, &error);
g_bytes_unref(bytes);
if (error != NULL) {
fprintf(stderr, "Error loading logo SVG\n");
return;
}
}
cairo_t *cr = state->ctx;
cairo_save(cr);
cairo_set_source_rgb(cr, (208.0 / 255.0), (69.0 / 255.0), (255.0 / 255.0));
cairo_rectangle(cr, 0, 0, kLogoBackgroundWidth, state->canvas_height);
cairo_fill(cr);
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
// Scale and draw logo
RsvgDimensionData dimensions;
rsvg_handle_get_dimensions(state->logo_svg_handle, &dimensions);
const double padding = 100.0;
double scale_factor = ((kLogoBackgroundWidth - (padding * 2.0)) / dimensions.width);
double scaled_height = (dimensions.height * scale_factor);
double y_position = (state->canvas_height - scaled_height) / 2.0;
cairo_translate(cr, padding, y_position);
cairo_scale(cr, scale_factor, scale_factor);
rsvg_handle_render_cairo(state->logo_svg_handle, cr);
cairo_restore(cr);
}
void draw_password_field(saver_state_t *state)
{
const double cursor_height = 40.0;
const double cursor_width = 30.0;
const double field_x = kLogoBackgroundWidth + 50.0;
const double field_y = (state->canvas_height - cursor_height) / 2.0;
const double field_padding = 10.0;
cairo_t *cr = state->ctx;
// Draw status text
const char *prompt = (state->password_prompt ?: "???");
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
pango_layout_set_font_description(state->pango_layout, state->status_font);
pango_layout_set_text(state->pango_layout, prompt, -1);
int t_width, t_height;
pango_layout_get_size(state->pango_layout, &t_width, &t_height);
double line_height = t_height / PANGO_SCALE;
cairo_move_to(cr, field_x, field_y - line_height - field_padding);
pango_cairo_show_layout(cr, state->pango_layout);
// Draw password asterisks
if (state->asterisk_svg_handle == NULL) {
GError *error = NULL;
GBytes *bytes = get_data_for_resource("/resources/asterisk.svg");
gsize size = 0;
gconstpointer data = g_bytes_get_data(bytes, &size);
state->asterisk_svg_handle = rsvg_handle_new_from_data(data, size, &error);
g_bytes_unref(bytes);
if (error != NULL) {
fprintf(stderr, "Error loading asterisk SVG\n");
return;
}
}
const double cursor_padding_x = 10.0;
double cursor_offset_x = 0.0;
RsvgDimensionData dimensions;
rsvg_handle_get_dimensions(state->asterisk_svg_handle, &dimensions);
double asterisk_height = cursor_height - 20.0;
double scale_factor = (asterisk_height / dimensions.height);
double scaled_width = (dimensions.width * scale_factor);
for (unsigned i = 0; i < strlen(state->password_buffer); i++) {
cairo_save(cr);
cairo_translate(cr, field_x + cursor_offset_x, field_y + ((cursor_height - asterisk_height) / 2.0));
cairo_scale(cr, scale_factor, scale_factor);
rsvg_handle_render_cairo(state->asterisk_svg_handle, cr);
cairo_restore(cr);
cursor_offset_x += scaled_width + cursor_padding_x;
}
// Draw cursor
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, state->cursor_opacity);
if (state->cursor_animating) {
cairo_rectangle(cr, field_x + cursor_offset_x, field_y, cursor_width, cursor_height);
} else {
// Fill asterisks
cairo_rectangle(cr, field_x, field_y, cursor_offset_x, cursor_height);
}
cairo_fill(cr);
}
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