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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <skia/win/gdiimpl.hxx>
#include <tools/sk_app/win/WindowContextFactory_win.h>
#include <tools/sk_app/WindowContext.h>
#include <SkColorFilter.h>
#include <SkPixelRef.h>
WinSkiaSalGraphicsImpl::WinSkiaSalGraphicsImpl(WinSalGraphics& rGraphics,
SalGeometryProvider* mpProvider)
: SkiaSalGraphicsImpl(rGraphics, mpProvider)
, mWinParent(rGraphics)
{
}
void WinSkiaSalGraphicsImpl::Init()
{
#if 0 // TODO
if (!IsOffscreen() && mpContext.is() && mpContext->isInitialized())
{
const GLWinWindow& rGLWindow = static_cast<const GLWinWindow&>(mpContext->getOpenGLWindow());
if (rGLWindow.hWnd != mrWinParent.mhWnd || rGLWindow.hDC == mrWinParent.mhLocalDC)
{
// This can legitimately happen, SalFrame keeps 2x
// SalGraphics which share the same hWnd and hDC.
// The shape 'Area' dialog does reparenting to trigger this.
SAL_WARN("vcl.opengl", "Unusual: Windows handle / DC changed without DeInit");
DeInit();
}
}
#endif
SkiaSalGraphicsImpl::Init();
}
void WinSkiaSalGraphicsImpl::createSurface()
{
if (isOffscreen())
return SkiaSalGraphicsImpl::createSurface();
// When created, Init() gets called with size (0,0), which is invalid size
// for Skia. Creating the actual surface is delayed, so the size should be always
// valid here, but better check.
assert(GetWidth() != 0 && GetHeight() != 0);
sk_app::DisplayParams displayParams;
destroySurface();
switch (renderMethodToUse())
{
case RenderRaster:
mWindowContext = sk_app::window_context_factory::MakeRasterForWin(mWinParent.gethWnd(),
displayParams);
break;
case RenderVulkan:
mWindowContext = sk_app::window_context_factory::MakeVulkanForWin(mWinParent.gethWnd(),
displayParams);
break;
}
assert(SkToBool(mWindowContext)); // TODO
mSurface = mWindowContext->getBackbufferSurface();
assert(mSurface.get());
}
void WinSkiaSalGraphicsImpl::DeInit()
{
SkiaSalGraphicsImpl::DeInit();
mWindowContext.reset();
}
void WinSkiaSalGraphicsImpl::freeResources() {}
void WinSkiaSalGraphicsImpl::performFlush()
{
if (mWindowContext)
mWindowContext->swapBuffers();
}
bool WinSkiaSalGraphicsImpl::TryRenderCachedNativeControl(ControlCacheKey const& rControlCacheKey,
int nX, int nY)
{
(void)rControlCacheKey;
(void)nX;
(void)nY;
return false; // TODO
}
bool WinSkiaSalGraphicsImpl::RenderAndCacheNativeControl(CompatibleDC& rWhite, CompatibleDC& rBlack,
int nX, int nY,
ControlCacheKey& aControlCacheKey)
{
(void)rWhite;
(void)rBlack;
(void)nX;
(void)nY;
(void)aControlCacheKey;
return false; // TODO
}
void WinSkiaSalGraphicsImpl::PreDrawText() { preDraw(); }
void WinSkiaSalGraphicsImpl::PostDrawText() { postDraw(); }
SkColor toSkColor(Color color)
{
return SkColorSetARGB(255 - color.GetTransparency(), color.GetRed(), color.GetGreen(),
color.GetBlue());
}
void WinSkiaSalGraphicsImpl::DeferredTextDraw(const CompatibleDC::Texture* pTexture,
Color aMaskColor, const SalTwoRect& rPosAry)
{
assert(dynamic_cast<const SkiaCompatibleDC::Texture*>(pTexture));
preDraw();
SkPaint paint;
// The glyph is painted as white, modulate it to be of the appropriate color.
// SkiaCompatibleDC::wantsTextColorWhite() ensures the glyph is white.
// TODO maybe other black/white in WinFontInstance::CacheGlyphToAtlas() should be swapped.
paint.setColorFilter(SkColorFilters::Blend(toSkColor(aMaskColor), SkBlendMode::kModulate));
mSurface->getCanvas()->drawBitmapRect(
static_cast<const SkiaCompatibleDC::Texture*>(pTexture)->bitmap,
SkRect::MakeXYWH(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight),
SkRect::MakeXYWH(rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnDestWidth,
rPosAry.mnDestHeight),
&paint);
postDraw();
}
void WinSkiaSalGraphicsImpl::DrawTextMask(CompatibleDC::Texture* pTexture, Color nMaskColor,
const SalTwoRect& rPosAry)
{
assert(dynamic_cast<SkiaCompatibleDC::Texture*>(pTexture));
const SkBitmap& bitmap = static_cast<const SkiaCompatibleDC::Texture*>(pTexture)->bitmap;
preDraw();
SkBitmap tmpBitmap;
if (!tmpBitmap.tryAllocN32Pixels(bitmap.width(), bitmap.height()))
abort();
tmpBitmap.eraseColor(toSkColor(nMaskColor));
SkPaint paint;
// Draw the color with the given mask.
// TODO figure out the right blend mode to avoid the temporary bitmap
paint.setBlendMode(SkBlendMode::kDstOut);
SkCanvas canvas(tmpBitmap);
canvas.drawBitmap(bitmap, 0, 0, &paint);
mSurface->getCanvas()->drawBitmapRect(
tmpBitmap,
SkRect::MakeXYWH(rPosAry.mnSrcX, rPosAry.mnSrcY, rPosAry.mnSrcWidth, rPosAry.mnSrcHeight),
SkRect::MakeXYWH(rPosAry.mnDestX, rPosAry.mnDestY, rPosAry.mnDestWidth,
rPosAry.mnDestHeight),
nullptr);
postDraw();
}
SkiaCompatibleDC::SkiaCompatibleDC(SalGraphics& rGraphics, int x, int y, int width, int height)
: CompatibleDC(rGraphics, x, y, width, height, false)
{
}
std::unique_ptr<CompatibleDC::Texture> SkiaCompatibleDC::getAsMaskTexture()
{
auto ret = std::make_unique<SkiaCompatibleDC::Texture>();
// mpData is in the BGRA format, with A unused (and set to 0), and RGB are grey,
// so convert it to Skia format, then to 8bit and finally use as alpha mask
SkBitmap tmpBitmap;
if (!tmpBitmap.installPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
kBGRA_8888_SkColorType, kOpaque_SkAlphaType),
mpData, maRects.mnSrcWidth * 4))
abort();
SkBitmap bitmap8;
if (!bitmap8.tryAllocPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
kGray_8_SkColorType, kOpaque_SkAlphaType)))
abort();
SkCanvas canvas8(bitmap8);
SkPaint paint8;
paint8.setBlendMode(SkBlendMode::kSrc); // copy and convert depth
// The data we got is upside-down.
SkMatrix matrix;
matrix.preTranslate(0, maRects.mnSrcHeight);
matrix.setConcat(matrix, SkMatrix::MakeScale(1, -1));
canvas8.concat(matrix);
canvas8.drawBitmap(tmpBitmap, 0, 0, &paint8);
// use the 8bit data as an alpha channel
SkBitmap alpha;
alpha.setInfo(bitmap8.info().makeColorType(kAlpha_8_SkColorType), bitmap8.rowBytes());
alpha.setPixelRef(sk_ref_sp(bitmap8.pixelRef()), bitmap8.pixelRefOrigin().x(),
bitmap8.pixelRefOrigin().y());
ret->bitmap = alpha;
return ret;
}
bool SkiaCompatibleDC::copyToTexture(CompatibleDC::Texture& aTexture)
{
assert(mpImpl);
assert(dynamic_cast<SkiaCompatibleDC::Texture*>(&aTexture));
SkBitmap tmpBitmap;
if (!tmpBitmap.installPixels(SkImageInfo::Make(maRects.mnSrcWidth, maRects.mnSrcHeight,
kBGRA_8888_SkColorType, kUnpremul_SkAlphaType),
mpData, maRects.mnSrcWidth * 4))
abort();
SkBitmap& bitmap = static_cast<SkiaCompatibleDC::Texture&>(aTexture).bitmap;
SkPaint paint;
paint.setBlendMode(SkBlendMode::kSrc); // set as is, including alpha
SkCanvas canvas(bitmap);
// The data we got is upside-down.
SkMatrix matrix;
matrix.preTranslate(0, maRects.mnSrcHeight);
matrix.setConcat(matrix, SkMatrix::MakeScale(1, -1));
canvas.concat(matrix);
canvas.drawBitmapRect(tmpBitmap,
SkRect::MakeXYWH(0, 0, maRects.mnSrcWidth, maRects.mnSrcHeight),
SkRect::MakeXYWH(0, 0, maRects.mnSrcWidth, maRects.mnSrcHeight), &paint);
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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