2 * Copyright (c) 2022 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali-toolkit/internal/text/rendering/styles/strikethrough-helper-functions.h>
27 bool IsGlyphStrikethrough(GlyphIndex index,
28 const Vector<StrikethroughGlyphRun>& strikethroughRuns,
29 Vector<StrikethroughGlyphRun>::ConstIterator& currentStrikethroughGlyphRunIt)
31 for(Vector<StrikethroughGlyphRun>::ConstIterator it = strikethroughRuns.Begin(),
32 endIt = strikethroughRuns.End();
36 const StrikethroughGlyphRun& run = *it;
38 if((run.glyphRun.glyphIndex <= index) && (index < run.glyphRun.glyphIndex + run.glyphRun.numberOfGlyphs))
40 currentStrikethroughGlyphRunIt = it;
48 float GetCurrentStrikethroughHeight(const Vector<StrikethroughGlyphRun>& strikethroughRuns,
49 Vector<StrikethroughGlyphRun>::ConstIterator currentStrikethroughGlyphRunIt,
50 const float strikethroughHeight)
52 if(currentStrikethroughGlyphRunIt == strikethroughRuns.End())
54 return strikethroughHeight;
57 const StrikethroughGlyphRun& strikethroughGlyphRun = *currentStrikethroughGlyphRunIt;
58 return (strikethroughGlyphRun.properties.heightDefined ? strikethroughGlyphRun.properties.height : strikethroughHeight);
61 StrikethroughStyleProperties GetCurrentStrikethroughProperties(const bool& isGlyphStrikethrough,
62 const Vector<StrikethroughGlyphRun>& strikethroughRuns,
63 Vector<StrikethroughGlyphRun>::ConstIterator currentStrikethroughGlyphRunIt,
64 const StrikethroughStyleProperties& commonStrikethroughProperties)
66 return (isGlyphStrikethrough && (currentStrikethroughGlyphRunIt != strikethroughRuns.End()))
67 ? currentStrikethroughGlyphRunIt->properties
68 : commonStrikethroughProperties;
71 /// Helper method to fetch the strikethrough metrics for the specified font glyph
72 void CalcualteStrikethroughHeight(float& currentStrikethroughHeight, float& maxStrikethroughHeight)
74 //Height of strikethrough represents the thickness of line.
76 // Ensure strikethrough will be at least a pixel high
77 if(currentStrikethroughHeight < 1.0f)
79 currentStrikethroughHeight = 1.0f;
83 currentStrikethroughHeight = ceil(currentStrikethroughHeight);
86 // The strikethrough height should be the max strikethrough height of all glyphs of the line.
87 if(currentStrikethroughHeight > maxStrikethroughHeight)
89 maxStrikethroughHeight = currentStrikethroughHeight;
95 } // namespace Toolkit