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 StrikethroughStyleProperties GetCurrentStrikethroughProperties(GlyphIndex index,
49 const bool& isGlyphStrikethrough,
50 const Vector<StrikethroughGlyphRun>& strikethroughRuns,
51 Vector<StrikethroughGlyphRun>::ConstIterator& currentStrikethroughGlyphRunIt,
52 const StrikethroughStyleProperties& commonStrikethroughProperties)
54 StrikethroughStyleProperties currentStrikethroughStyleProperties = commonStrikethroughProperties;
56 if(isGlyphStrikethrough && (currentStrikethroughGlyphRunIt != strikethroughRuns.End()))
58 // Retrieve the latest run to handle the nested case.
59 for(Vector<StrikethroughGlyphRun>::ConstIterator it = currentStrikethroughGlyphRunIt + 1,
60 endIt = strikethroughRuns.End();
64 const StrikethroughGlyphRun& run = *it;
66 if((run.glyphRun.glyphIndex <= index) && (index < (run.glyphRun.glyphIndex + run.glyphRun.numberOfGlyphs)))
68 currentStrikethroughGlyphRunIt = it;
72 currentStrikethroughStyleProperties.OverrideByDefinedProperties(currentStrikethroughGlyphRunIt->properties);
75 return currentStrikethroughStyleProperties;
78 /// Helper method to fetch the strikethrough metrics for the specified font glyph
79 void CalcualteStrikethroughHeight(float& currentStrikethroughHeight, float& maxStrikethroughHeight)
81 //Height of strikethrough represents the thickness of line.
83 // Ensure strikethrough will be at least a pixel high
84 if(currentStrikethroughHeight < 1.0f)
86 currentStrikethroughHeight = 1.0f;
90 currentStrikethroughHeight = ceil(currentStrikethroughHeight);
93 // The strikethrough height should be the max strikethrough height of all glyphs of the line.
94 if(currentStrikethroughHeight > maxStrikethroughHeight)
96 maxStrikethroughHeight = currentStrikethroughHeight;
102 } // namespace Toolkit