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Always include the last-resort font
This is used as a fallback for any characters that don't have glyphs in the specified font.
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commit
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258 changed files with 127 additions and 905 deletions
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@ -223,38 +223,35 @@ impl FontContext {
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}
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}
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// If unable to create any of the specified fonts, create one from the
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// list of last resort fonts for this platform.
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if fonts.is_empty() {
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let mut cache_hit = false;
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for cached_font_entry in &self.fallback_font_cache {
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let cached_font = cached_font_entry.font.borrow();
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if cached_font.descriptor == desc &&
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cached_font.requested_pt_size == style.font_size &&
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cached_font.variant == style.font_variant {
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fonts.push(cached_font_entry.font.clone());
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cache_hit = true;
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break;
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}
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// Add a last resort font as a fallback option.
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let mut cache_hit = false;
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for cached_font_entry in &self.fallback_font_cache {
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let cached_font = cached_font_entry.font.borrow();
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if cached_font.descriptor == desc &&
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cached_font.requested_pt_size == style.font_size &&
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cached_font.variant == style.font_variant {
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fonts.push(cached_font_entry.font.clone());
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cache_hit = true;
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break;
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}
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}
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if !cache_hit {
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let template_info = self.font_cache_thread.last_resort_font_template(desc.clone());
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let layout_font = self.create_layout_font(template_info.font_template,
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desc.clone(),
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style.font_size,
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style.font_variant,
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template_info.font_key);
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match layout_font {
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Ok(layout_font) => {
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let layout_font = Rc::new(RefCell::new(layout_font));
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self.fallback_font_cache.push(FallbackFontCacheEntry {
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font: layout_font.clone(),
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});
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fonts.push(layout_font);
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}
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Err(_) => debug!("Failed to create fallback layout font!")
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if !cache_hit {
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let template_info = self.font_cache_thread.last_resort_font_template(desc.clone());
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let layout_font = self.create_layout_font(template_info.font_template,
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desc.clone(),
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style.font_size,
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style.font_variant,
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template_info.font_key);
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match layout_font {
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Ok(layout_font) => {
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let layout_font = Rc::new(RefCell::new(layout_font));
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self.fallback_font_cache.push(FallbackFontCacheEntry {
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font: layout_font.clone(),
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});
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fonts.push(layout_font);
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}
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Err(_) => debug!("Failed to create fallback layout font!")
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}
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}
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