6f485569fa
Refactor DisplayListCanvas, RecordingCanvas, and SkiaCanvas to share a common API. Change-Id: I0268ec2749ea5d13a3a72bb2784ed6a9911383d9
67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "Canvas.h"
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#include "DisplayListCanvas.h"
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#include "RecordingCanvas.h"
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#include <SkDrawFilter.h>
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namespace android {
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Canvas* Canvas::create_recording_canvas(int width, int height) {
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#if HWUI_NEW_OPS
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return new uirenderer::RecordingCanvas(width, height);
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#else
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return new uirenderer::DisplayListCanvas(width, height);
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#endif
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}
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void Canvas::drawTextDecorations(float x, float y, float length, const SkPaint& paint) {
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uint32_t flags;
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SkDrawFilter* drawFilter = getDrawFilter();
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if (drawFilter) {
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SkPaint paintCopy(paint);
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drawFilter->filter(&paintCopy, SkDrawFilter::kText_Type);
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flags = paintCopy.getFlags();
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} else {
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flags = paint.getFlags();
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}
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if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) {
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// Same values used by Skia
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const float kStdStrikeThru_Offset = (-6.0f / 21.0f);
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const float kStdUnderline_Offset = (1.0f / 9.0f);
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const float kStdUnderline_Thickness = (1.0f / 18.0f);
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SkScalar left = x;
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SkScalar right = x + length;
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float textSize = paint.getTextSize();
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float strokeWidth = fmax(textSize * kStdUnderline_Thickness, 1.0f);
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if (flags & SkPaint::kUnderlineText_Flag) {
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SkScalar top = y + textSize * kStdUnderline_Offset - 0.5f * strokeWidth;
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SkScalar bottom = y + textSize * kStdUnderline_Offset + 0.5f * strokeWidth;
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drawRect(left, top, right, bottom, paint);
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}
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if (flags & SkPaint::kStrikeThruText_Flag) {
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SkScalar top = y + textSize * kStdStrikeThru_Offset - 0.5f * strokeWidth;
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SkScalar bottom = y + textSize * kStdStrikeThru_Offset + 0.5f * strokeWidth;
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drawRect(left, top, right, bottom, paint);
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}
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}
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}
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} // namespace android
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