| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "renderer/unix/text_renderer.h" |
| |
| #include "base/coordinates.h" |
| #include "renderer/unix/font_spec.h" |
| #include "renderer/unix/pango_wrapper.h" |
| |
| namespace mozc { |
| namespace renderer { |
| namespace gtk { |
| |
| TextRenderer::TextRenderer(FontSpecInterface *font_spec) |
| : font_spec_(font_spec), |
| pango_(nullptr) { |
| } |
| |
| void TextRenderer::Initialize(GdkDrawable *drawable) { |
| pango_.reset(new PangoWrapper(drawable)); |
| } |
| |
| void TextRenderer::SetUpPangoLayout(const string &str, |
| FontSpecInterface::FONT_TYPE font_type, |
| PangoLayoutWrapperInterface *layout) { |
| PangoAttrList *attributes = pango_->CopyAttributes( |
| font_spec_->GetFontAttributes(font_type)); |
| layout->SetText(str.c_str()); |
| layout->SetAlignment(font_spec_->GetFontAlignment(font_type)); |
| layout->SetAttributes(attributes); |
| layout->SetFontDescription(font_spec_->GetFontDescription(font_type)); |
| pango_->AttributesUnref(attributes); |
| } |
| |
| Size TextRenderer::GetPixelSize(FontSpecInterface::FONT_TYPE font_type, |
| const string &str) { |
| PangoLayoutWrapper layout(pango_->GetContext()); |
| return GetPixelSizeInternal(font_type, str, &layout); |
| } |
| |
| Size TextRenderer::GetPixelSizeInternal(FontSpecInterface::FONT_TYPE font_type, |
| const string &str, |
| PangoLayoutWrapperInterface *layout) { |
| SetUpPangoLayout(str, font_type, layout); |
| return layout->GetPixelSize(); |
| } |
| |
| Size TextRenderer::GetMultiLinePixelSize(FontSpecInterface::FONT_TYPE font_type, |
| const string &str, |
| const int width) { |
| PangoLayoutWrapper layout(pango_->GetContext()); |
| return GetMultiLinePixelSizeInternal(font_type, str, width, &layout); |
| } |
| |
| Size TextRenderer::GetMultiLinePixelSizeInternal( |
| FontSpecInterface::FONT_TYPE font_type, |
| const string &str, |
| const int width, |
| PangoLayoutWrapperInterface *layout) { |
| SetUpPangoLayout(str, font_type, layout); |
| layout->SetWidth(width * PANGO_SCALE); |
| return layout->GetPixelSize(); |
| } |
| |
| void TextRenderer::RenderText(const string &text, |
| const Rect &rect, |
| FontSpecInterface::FONT_TYPE font_type) { |
| PangoLayoutWrapper layout(pango_->GetContext()); |
| RenderTextInternal(text, rect, font_type, &layout); |
| } |
| |
| void TextRenderer::RenderTextInternal(const string& text, |
| const Rect &rect, |
| FontSpecInterface::FONT_TYPE font_type, |
| PangoLayoutWrapperInterface *layout) { |
| SetUpPangoLayout(text, font_type, layout); |
| layout->SetWidth(rect.size.width * PANGO_SCALE); |
| layout->SetHeight(rect.size.height * PANGO_SCALE); |
| |
| // Vertical centering. |
| Size actual_size = layout->GetPixelSize(); |
| const int delta_y = (rect.size.height - actual_size.height) / 2; |
| |
| pango_->RendererDrawLayout(layout, rect.origin.x * PANGO_SCALE, |
| (rect.origin.y + delta_y) * PANGO_SCALE); |
| } |
| |
| void TextRenderer::ReloadFontConfig(const string &font_description) { |
| font_spec_->Reload(font_description); |
| } |
| } // namespace gtk |
| } // namespace renderer |
| } // namespace mozc |