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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/.
+ *
+ * Some of this code is based on Skia source code, covered by the following
+ * license notice (see readlicense_oo for the full license):
+ *
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ */
+
+#include <sal/config.h>
+
+#include <skia/osx/gdiimpl.hxx>
+
+#include <skia/utils.hxx>
+#include <skia/zone.hxx>
+
+#include <tools/sk_app/mac/WindowContextFactory_mac.h>
+
+#include <quartz/ctfonts.hxx>
+
+#include <SkBitmap.h>
+#include <SkCanvas.h>
+#include <SkFont.h>
+#include <SkFontMgr_mac_ct.h>
+#include <SkTypeface_mac.h>
+
+using namespace SkiaHelper;
+
+AquaSkiaSalGraphicsImpl::AquaSkiaSalGraphicsImpl(AquaSalGraphics& rParent,
+ AquaSharedAttributes& rShared)
+ : SkiaSalGraphicsImpl(rParent, rShared.mpFrame)
+ , AquaGraphicsBackendBase(rShared)
+{
+ Init(); // mac code doesn't call Init()
+}
+
+AquaSkiaSalGraphicsImpl::~AquaSkiaSalGraphicsImpl()
+{
+ DeInit(); // mac code doesn't call DeInit()
+}
+
+void AquaSkiaSalGraphicsImpl::freeResources() {}
+
+void AquaSkiaSalGraphicsImpl::createWindowSurfaceInternal(bool forceRaster)
+{
+ assert(!mWindowContext);
+ assert(!mSurface);
+ SkiaZone zone;
+ sk_app::DisplayParams displayParams;
+ displayParams.fColorType = kN32_SkColorType;
+ sk_app::window_context_factory::MacWindowInfo macWindow;
+ macWindow.fMainView = mrShared.mpFrame->mpNSView;
+ mScaling = getWindowScaling();
+ RenderMethod renderMethod = forceRaster ? RenderRaster : renderMethodToUse();
+ switch (renderMethod)
+ {
+ case RenderRaster:
+ // RasterWindowContext_mac uses OpenGL internally, which we don't want,
+ // so use our own surface and do blitting to the screen ourselves.
+ mSurface = createSkSurface(GetWidth() * mScaling, GetHeight() * mScaling);
+ break;
+ case RenderMetal:
+ mWindowContext
+ = sk_app::window_context_factory::MakeMetalForMac(macWindow, displayParams);
+ // Like with other GPU contexts, create a proxy offscreen surface (see
+ // flushSurfaceToWindowContext()). Here it's additionally needed because
+ // it appears that Metal surfaces cannot be read from, which would break things
+ // like copyArea().
+ if (mWindowContext)
+ mSurface = createSkSurface(GetWidth() * mScaling, GetHeight() * mScaling);
+ break;
+ case RenderVulkan:
+ abort();
+ break;
+ }
+}
+
+int AquaSkiaSalGraphicsImpl::getWindowScaling() const
+{
+ // The system function returns float, but only integer multiples realistically make sense.
+ return sal::aqua::getWindowScaling();
+}
+
+void AquaSkiaSalGraphicsImpl::Flush() { performFlush(); }
+
+void AquaSkiaSalGraphicsImpl::Flush(const tools::Rectangle&) { performFlush(); }
+
+void AquaSkiaSalGraphicsImpl::flushSurfaceToWindowContext()
+{
+ if (!isGPU())
+ flushSurfaceToScreenCG();
+ else
+ SkiaSalGraphicsImpl::flushSurfaceToWindowContext();
+}
+
+constexpr static uint32_t toCGBitmapType(SkColorType color, SkAlphaType alpha)
+{
+ if (alpha == kPremul_SkAlphaType)
+ {
+ return color == kBGRA_8888_SkColorType
+ ? (uint32_t(kCGImageAlphaPremultipliedFirst)
+ | uint32_t(kCGBitmapByteOrder32Little))
+ : (uint32_t(kCGImageAlphaPremultipliedLast) | uint32_t(kCGBitmapByteOrder32Big));
+ }
+ else
+ {
+ assert(alpha == kOpaque_SkAlphaType);
+ return color == kBGRA_8888_SkColorType
+ ? (uint32_t(kCGImageAlphaNoneSkipFirst) | uint32_t(kCGBitmapByteOrder32Little))
+ : (uint32_t(kCGImageAlphaNoneSkipLast) | uint32_t(kCGBitmapByteOrder32Big));
+ }
+}
+
+// For Raster we use our own screen blitting (see above).
+void AquaSkiaSalGraphicsImpl::flushSurfaceToScreenCG()
+{
+ // Based on AquaGraphicsBackend::drawBitmap().
+ if (!mrShared.checkContext())
+ return;
+
+ assert(mSurface.get());
+ // Do not use sub-rect, it creates copies of the data.
+ sk_sp<SkImage> image = makeCheckedImageSnapshot(mSurface);
+ SkPixmap pixmap;
+ if (!image->peekPixels(&pixmap))
+ abort();
+ // If window scaling, then mDirtyRect is in VCL coordinates, mSurface has screen size (=points,HiDPI),
+ // maContextHolder has screen size but a scale matrix set so its inputs are in VCL coordinates (see
+ // its setup in AquaSharedAttributes::checkContext()).
+ // This creates the bitmap context from the cropped part, writable_addr32() will get
+ // the first pixel of mDirtyRect.topLeft(), and using pixmap.rowBytes() ensures the following
+ // pixel lines will be read from correct positions.
+ if (pixmap.bounds() != mDirtyRect && pixmap.bounds().bottom() == mDirtyRect.bottom())
+ {
+ // HACK for tdf#145843: If mDirtyRect includes the last line but not the first pixel of it,
+ // then the rowBytes() trick would lead to the GC* functions thinking that even pixels after
+ // the pixmap data belong to the area (since the shifted x()+rowBytes() points there) and
+ // at least on Intel Mac they would actually read those data, even though I see no good reason
+ // to do that, as that's beyond the x()+width() for the last line. That could be handled
+ // by creating a subset SkImage (which as is said above copies data), or set the x coordinate
+ // to 0, which will then make rowBytes() match the actual data.
+ mDirtyRect.fLeft = 0;
+ assert(mDirtyRect.width() == pixmap.bounds().width());
+ }
+ CGContextRef context = CGBitmapContextCreate(
+ pixmap.writable_addr32(mDirtyRect.x() * mScaling, mDirtyRect.y() * mScaling),
+ mDirtyRect.width() * mScaling, mDirtyRect.height() * mScaling, 8, pixmap.rowBytes(),
+ GetSalData()->mxRGBSpace, toCGBitmapType(image->colorType(), image->alphaType()));
+ if (!context)
+ {
+ SAL_WARN("vcl.skia", "flushSurfaceToScreenGC(): Failed to allocate bitmap context");
+ return;
+ }
+ CGImageRef screenImage = CGBitmapContextCreateImage(context);
+ if (!screenImage)
+ {
+ CGContextRelease(context);
+ SAL_WARN("vcl.skia", "flushSurfaceToScreenGC(): Failed to allocate screen image");
+ return;
+ }
+ mrShared.maContextHolder.saveState();
+ // Drawing to the actual window has scaling active, so use unscaled coordinates, the scaling matrix will scale them
+ // to the proper screen coordinates. Unless the scaling is fake for debugging, in which case scale them to draw
+ // at the scaled size.
+ int windowScaling = 1;
+ static const char* env = getenv("SAL_FORCE_HIDPI_SCALING");
+ if (env != nullptr)
+ windowScaling = atoi(env);
+ CGRect drawRect
+ = CGRectMake(mDirtyRect.x() * windowScaling, mDirtyRect.y() * windowScaling,
+ mDirtyRect.width() * windowScaling, mDirtyRect.height() * windowScaling);
+ if (mrShared.isFlipped())
+ {
+ // I don't understand why, but apparently it's needed to explicitly to flip the drawing, even though maContextHelper
+ // has this set up, so this unsets the flipping.
+ CGFloat invertedY = drawRect.origin.y + drawRect.size.height;
+ CGContextTranslateCTM(mrShared.maContextHolder.get(), 0, invertedY);
+ CGContextScaleCTM(mrShared.maContextHolder.get(), 1, -1);
+ drawRect.origin.y = 0;
+ }
+ CGContextDrawImage(mrShared.maContextHolder.get(), drawRect, screenImage);
+ mrShared.maContextHolder.restoreState();
+
+ CGImageRelease(screenImage);
+ CGContextRelease(context);
+ // This is also in VCL coordinates.
+ mrShared.refreshRect(mDirtyRect.x(), mDirtyRect.y(), mDirtyRect.width(), mDirtyRect.height());
+}
+
+bool AquaSkiaSalGraphicsImpl::drawNativeControl(ControlType nType, ControlPart nPart,
+ const tools::Rectangle& rControlRegion,
+ ControlState nState, const ImplControlValue& aValue)
+{
+ // rControlRegion is not the whole area that the control should be painted to (e.g. highlight
+ // around focused lineedit is outside of it). Since we draw to a temporary bitmap, we need tofind out
+ // the real size. Using getNativeControlRegion() might seem like the function to call, but we need
+ // the other direction - what is called rControlRegion here is rNativeContentRegion in that function
+ // what's called rControlRegion there is what we need here. Moreover getNativeControlRegion()
+ // in some cases returns a fixed size that does not depend on its input, so we have no way to
+ // actually find out what the original size was (or maybe the function is kind of broken, I don't know).
+ // So, add a generous margin and hope it's enough.
+ tools::Rectangle boundingRegion(rControlRegion);
+ boundingRegion.expand(50 * mScaling);
+ // Do a scaled bitmap in HiDPI in order not to lose precision.
+ const tools::Long width = boundingRegion.GetWidth() * mScaling;
+ const tools::Long height = boundingRegion.GetHeight() * mScaling;
+ const size_t bytes = width * height * 4;
+ std::unique_ptr<sal_uInt8[]> data(new sal_uInt8[bytes]);
+ memset(data.get(), 0, bytes);
+ CGContextRef context = CGBitmapContextCreate(
+ data.get(), width, height, 8, width * 4, GetSalData()->mxRGBSpace,
+ toCGBitmapType(mSurface->imageInfo().colorType(), kPremul_SkAlphaType));
+ if (!context)
+ {
+ SAL_WARN("vcl.skia", "drawNativeControl(): Failed to allocate bitmap context");
+ return false;
+ }
+ // Setup context state for drawing (performDrawNativeControl() e.g. fills background in some cases).
+ CGContextSetFillColorSpace(context, GetSalData()->mxRGBSpace);
+ CGContextSetStrokeColorSpace(context, GetSalData()->mxRGBSpace);
+ RGBAColor lineColor(mLineColor);
+ CGContextSetRGBStrokeColor(context, lineColor.GetRed(), lineColor.GetGreen(),
+ lineColor.GetBlue(), lineColor.GetAlpha());
+ RGBAColor fillColor(mFillColor);
+ CGContextSetRGBFillColor(context, fillColor.GetRed(), fillColor.GetGreen(), fillColor.GetBlue(),
+ fillColor.GetAlpha());
+ // Adjust for our drawn-to coordinates in the bitmap.
+ tools::Rectangle movedRegion(Point(rControlRegion.getX() - boundingRegion.getX(),
+ rControlRegion.getY() - boundingRegion.getY()),
+ rControlRegion.GetSize());
+ // Flip drawing upside down.
+ CGContextTranslateCTM(context, 0, height);
+ CGContextScaleCTM(context, 1, -1);
+ // And possibly scale the native drawing.
+ CGContextScaleCTM(context, mScaling, mScaling);
+ bool bOK = performDrawNativeControl(nType, nPart, movedRegion, nState, aValue, context,
+ mrShared.mpFrame);
+ CGContextRelease(context);
+ if (bOK)
+ {
+ SkBitmap bitmap;
+ if (!bitmap.installPixels(SkImageInfo::Make(width, height,
+ mSurface->imageInfo().colorType(),
+ kPremul_SkAlphaType),
+ data.get(), width * 4))
+ abort();
+
+ preDraw();
+ SAL_INFO("vcl.skia.trace", "drawnativecontrol(" << this << "): " << rControlRegion << ":"
+ << int(nType) << "/" << int(nPart));
+ tools::Rectangle updateRect = boundingRegion;
+ // For background update only part that is not clipped, the same
+ // as in AquaGraphicsBackend::drawNativeControl().
+ if (nType == ControlType::WindowBackground)
+ updateRect.Intersection(mClipRegion.GetBoundRect());
+ addUpdateRegion(SkRect::MakeXYWH(updateRect.getX(), updateRect.getY(),
+ updateRect.GetWidth(), updateRect.GetHeight()));
+ SkRect drawRect = SkRect::MakeXYWH(boundingRegion.getX(), boundingRegion.getY(),
+ boundingRegion.GetWidth(), boundingRegion.GetHeight());
+ assert(drawRect.width() * mScaling == bitmap.width()); // no scaling should be needed
+ getDrawCanvas()->drawImageRect(bitmap.asImage(), drawRect, SkSamplingOptions());
+ ++pendingOperationsToFlush; // tdf#136369
+ postDraw();
+ }
+ return bOK;
+}
+
+void AquaSkiaSalGraphicsImpl::drawTextLayout(const GenericSalLayout& rLayout,
+ bool bSubpixelPositioning)
+{
+ const CoreTextStyle& rStyle = *static_cast<const CoreTextStyle*>(&rLayout.GetFont());
+ const vcl::font::FontSelectPattern& rFontSelect = rStyle.GetFontSelectPattern();
+ int nHeight = rFontSelect.mnHeight;
+ int nWidth = rFontSelect.mnWidth ? rFontSelect.mnWidth : nHeight;
+ if (nWidth == 0 || nHeight == 0)
+ {
+ SAL_WARN("vcl.skia", "DrawTextLayout(): rFontSelect.mnHeight is zero!?");
+ return;
+ }
+
+ if (!fontManager)
+ {
+ SystemFontList* fontList = GetCoretextFontList();
+ if (fontList == nullptr)
+ {
+ SAL_WARN("vcl.skia", "DrawTextLayout(): No coretext font list");
+ fontManager = SkFontMgr_New_CoreText(nullptr);
+ }
+ else
+ {
+ fontManager = SkFontMgr_New_CoreText(fontList->fontCollection());
+ }
+ }
+
+ CTFontRef pFont
+ = static_cast<CTFontRef>(CFDictionaryGetValue(rStyle.GetStyleDict(), kCTFontAttributeName));
+ sk_sp<SkTypeface> typeface = SkMakeTypefaceFromCTFont(pFont);
+ SkFont font(typeface);
+ font.setSize(nHeight);
+ // font.setScaleX(rStyle.mfFontStretch); TODO
+ if (rStyle.mbFauxBold)
+ font.setEmbolden(true);
+
+ SkFont::Edging ePreferredAliasing
+ = bSubpixelPositioning ? SkFont::Edging::kSubpixelAntiAlias : SkFont::Edging::kAntiAlias;
+ if (bSubpixelPositioning)
+ {
+ // note that SkFont defaults to a BaselineSnap of true, so I think really only
+ // subpixel in text direction
+ font.setSubpixel(true);
+ }
+ font.setEdging(mrShared.mbNonAntialiasedText ? SkFont::Edging::kAlias : ePreferredAliasing);
+
+ // Vertical font, use width as "height".
+ SkFont verticalFont(font);
+ verticalFont.setSize(nHeight);
+ // verticalFont.setSize(nWidth); TODO
+ // verticalFont.setScaleX(1.0 * nHeight / nWidth);
+
+ drawGenericLayout(rLayout, mrShared.maTextColor, font, verticalFont);
+}
+
+namespace
+{
+std::unique_ptr<sk_app::WindowContext> createMetalWindowContext(bool /*temporary*/)
+{
+ sk_app::DisplayParams displayParams;
+ sk_app::window_context_factory::MacWindowInfo macWindow;
+ macWindow.fMainView = nullptr;
+ return sk_app::window_context_factory::MakeMetalForMac(macWindow, displayParams);
+}
+}
+
+void AquaSkiaSalGraphicsImpl::prepareSkia() { SkiaHelper::prepareSkia(createMetalWindowContext); }
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */