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/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "vector_vpainter.h"
#include <algorithm>
V_BEGIN_NAMESPACE
void VPainter::drawRle(const VPoint &, const VRle &rle)
{
if (rle.empty()) return;
// mSpanData.updateSpanFunc();
if (!mSpanData.mUnclippedBlendFunc) return;
// do draw after applying clip.
rle.intersect(mSpanData.clipRect(), mSpanData.mUnclippedBlendFunc,
&mSpanData);
}
void VPainter::drawRle(const VRle &rle, const VRle &clip)
{
if (rle.empty() || clip.empty()) return;
if (!mSpanData.mUnclippedBlendFunc) return;
rle.intersect(clip, mSpanData.mUnclippedBlendFunc, &mSpanData);
}
static void fillRect(const VRect &r, VSpanData *data)
{
auto x1 = std::max(r.x(), 0);
auto x2 = std::min(r.x() + r.width(), data->mDrawableSize.width());
auto y1 = std::max(r.y(), 0);
auto y2 = std::min(r.y() + r.height(), data->mDrawableSize.height());
if (x2 <= x1 || y2 <= y1) return;
const int nspans = 256;
VRle::Span spans[nspans];
int y = y1;
while (y < y2) {
int n = std::min(nspans, y2 - y);
int i = 0;
while (i < n) {
spans[i].x = short(x1);
spans[i].len = ushort(x2 - x1);
spans[i].y = short(y + i);
spans[i].coverage = 255;
++i;
}
data->mUnclippedBlendFunc(n, spans, data);
y += n;
}
}
void VPainter::drawBitmapUntransform(const VRect & target,
const VBitmap &bitmap,
const VRect & source,
uint8_t const_alpha)
{
mSpanData.initTexture(&bitmap, const_alpha, source);
if (!mSpanData.mUnclippedBlendFunc) return;
// update translation matrix for source texture.
mSpanData.dx = float(target.x() - source.x());
mSpanData.dy = float(target.y() - source.y());
fillRect(target, &mSpanData);
}
VPainter::VPainter(VBitmap *buffer)
{
begin(buffer);
}
bool VPainter::begin(VBitmap *buffer)
{
mBuffer.prepare(buffer);
mSpanData.init(&mBuffer);
// TODO find a better api to clear the surface
mBuffer.clear();
return true;
}
void VPainter::end() {}
void VPainter::setDrawRegion(const VRect ®ion)
{
mSpanData.setDrawRegion(region);
}
void VPainter::setBrush(const VBrush &brush)
{
mSpanData.setup(brush);
}
void VPainter::setBlendMode(BlendMode mode)
{
mSpanData.mBlendMode = mode;
}
VRect VPainter::clipBoundingRect() const
{
return mSpanData.clipRect();
}
void VPainter::drawBitmap(const VPoint &point, const VBitmap &bitmap,
const VRect &source, uint8_t const_alpha)
{
if (!bitmap.valid()) return;
drawBitmap(VRect(point, bitmap.size()),
bitmap, source, const_alpha);
}
void VPainter::drawBitmap(const VRect &target, const VBitmap &bitmap,
const VRect &source, uint8_t const_alpha)
{
if (!bitmap.valid()) return;
// clear any existing brush data.
setBrush(VBrush());
if (target.size() == source.size()) {
drawBitmapUntransform(target, bitmap, source, const_alpha);
} else {
// @TODO scaling
}
}
void VPainter::drawBitmap(const VPoint &point, const VBitmap &bitmap,
uint8_t const_alpha)
{
if (!bitmap.valid()) return;
drawBitmap(VRect(point, bitmap.size()),
bitmap, bitmap.rect(),
const_alpha);
}
void VPainter::drawBitmap(const VRect &rect, const VBitmap &bitmap,
uint8_t const_alpha)
{
if (!bitmap.valid()) return;
drawBitmap(rect, bitmap, bitmap.rect(),
const_alpha);
}
V_END_NAMESPACE
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