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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Canvas.h"
#include "DisplayListCanvas.h"
#include "RecordingCanvas.h"
#include <SkDrawFilter.h>
namespace android {
Canvas* Canvas::create_recording_canvas(int width, int height) {
#if HWUI_NEW_OPS
return new uirenderer::RecordingCanvas(width, height);
#else
return new uirenderer::DisplayListCanvas(width, height);
#endif
}
void Canvas::drawTextDecorations(float x, float y, float length, const SkPaint& paint) {
uint32_t flags;
SkDrawFilter* drawFilter = getDrawFilter();
if (drawFilter) {
SkPaint paintCopy(paint);
drawFilter->filter(&paintCopy, SkDrawFilter::kText_Type);
flags = paintCopy.getFlags();
} else {
flags = paint.getFlags();
}
if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) {
// Same values used by Skia
const float kStdStrikeThru_Offset = (-6.0f / 21.0f);
const float kStdUnderline_Offset = (1.0f / 9.0f);
const float kStdUnderline_Thickness = (1.0f / 18.0f);
SkScalar left = x;
SkScalar right = x + length;
float textSize = paint.getTextSize();
float strokeWidth = fmax(textSize * kStdUnderline_Thickness, 1.0f);
if (flags & SkPaint::kUnderlineText_Flag) {
SkScalar top = y + textSize * kStdUnderline_Offset - 0.5f * strokeWidth;
SkScalar bottom = y + textSize * kStdUnderline_Offset + 0.5f * strokeWidth;
drawRect(left, top, right, bottom, paint);
}
if (flags & SkPaint::kStrikeThruText_Flag) {
SkScalar top = y + textSize * kStdStrikeThru_Offset - 0.5f * strokeWidth;
SkScalar bottom = y + textSize * kStdStrikeThru_Offset + 0.5f * strokeWidth;
drawRect(left, top, right, bottom, paint);
}
}
}
} // namespace android
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