Differential D15514 Diff 43161 kdecoration/breezedecoration.cpp

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kdecoration/breezedecoration.cpp

1/* 1​/*
2* Copyright 2014 Martin Gräßlin <mgraesslin@kde.org> 2​* Copyright 2014 Martin Gräßlin <mgraesslin@kde.org>
3* Copyright 2014 Hugo Pereira Da Costa <hugo.pereira@free.fr> 3​* Copyright 2014 Hugo Pereira Da Costa <hugo.pereira@free.fr>
4​* Copyright 2018 Vlad Zagorodniy <vladzzag@gmail.com>
4* 5​*
5* This program is free software; you can redistribute it and/or 6​* This program is free software; you can redistribute it and/or
6* modify it under the terms of the GNU General Public License as 7​* modify it under the terms of the GNU General Public License as
7* published by the Free Software Foundation; either version 2 of 8​* published by the Free Software Foundation; either version 2 of
8* the License or (at your option) version 3 or any later version 9​* the License or (at your option) version 3 or any later version
9* accepted by the membership of KDE e.V. (or its successor approved 10​* accepted by the membership of KDE e.V. (or its successor approved
10* by the membership of KDE e.V.), which shall act as a proxy 11​* by the membership of KDE e.V.), which shall act as a proxy
11* defined in Section 14 of version 3 of the license. 12​* defined in Section 14 of version 3 of the license.
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24#include "breeze.h" 25​#include "breeze.h"
25#include "breezesettingsprovider.h" 26​#include "breezesettingsprovider.h"
26#include "config-breeze.h" 27​#include "config-breeze.h"
27#include "config/breezeconfigwidget.h" 28​#include "config/breezeconfigwidget.h"
28 29​
29#include "breezebutton.h" 30​#include "breezebutton.h"
30#include "breezesizegrip.h" 31​#include "breezesizegrip.h"
31 32​
32#include "breezeboxshadowhelper.h" 33​#include "breezeboxshadowrenderer.h"
33 34​
34#include <KDecoration2/DecoratedClient> 35​#include <KDecoration2/DecoratedClient>
35#include <KDecoration2/DecorationButtonGroup> 36​#include <KDecoration2/DecorationButtonGroup>
36#include <KDecoration2/DecorationSettings> 37​#include <KDecoration2/DecorationSettings>
37#include <KDecoration2/DecorationShadow> 38​#include <KDecoration2/DecorationShadow>
38 39​
39#include <KConfigGroup> 40​#include <KConfigGroup>
40#include <KColorUtils> 41​#include <KColorUtils>
▲ Show 20 Lines • Show All 683 Lines • ▼ Show 20 Line(s)715 {
724 } 725​ }
725 726​
726 auto withOpacity = [](const QColor &color, qreal opacity) -> QColor { 727​ auto withOpacity = [](const QColor &color, qreal opacity) -> QColor {
727 QColor c(color); 728​ QColor c(color);
728 c.setAlphaF(opacity); 729​ c.setAlphaF(opacity);
729 return c; 730​ return c;
730 }; 731​ };
731 732​
732 // In order to properly render a box shadow with a given radius `shadowSize`, 733​ const QSize boxSize = BoxShadowRenderer::calculateMinimumBoxSize(params.shadow1.radius)
733 // the box size should be at least `2 * QSize(shadowSize, shadowSize)`. 734​ .expandedTo(BoxShadowRenderer::calculateMinimumBoxSize(params.shadow2.radius));
734 const int shadowSize = qMax(params.shadow1.radius, params.shadow2.radius); ​
735 const QRect box(shadowSize, shadowSize, 2 * shadowSize + 1, 2 * shadowSize + 1); ​
736 const QRect rect = box.adjusted(-shadowSize, -shadowSize, shadowSize, shadowSize); ​
737 735​
738 QImage shadow(rect.size(), QImage::Format_ARGB32_Premultiplied); 736​ BoxShadowRenderer shadowRenderer;
739 shadow.fill(Qt::transparent); 737​ shadowRenderer.setBorderRadius(Metrics::Frame_FrameRadius + 0.5);
740 738​ shadowRenderer.setBoxSize(boxSize);
741 QPainter painter(&shadow); 739​ shadowRenderer.setDevicePixelRatio(1.0); // TODO: Create HiDPI shadows?
742 painter.setRenderHint(QPainter::Antialiasing); ​
743 740​
744 const qreal strength = static_cast<qreal>(g_shadowStrength) / 255.0; 741​ const qreal strength = static_cast<qreal>(g_shadowStrength) / 255.0;
745 742​ shadowRenderer.addShadow(params.shadow1.offset, params.shadow1.radius,
746 // Draw the "shape" shadow. ​
747 BoxShadowHelper::boxShadow( ​
748 &painter, ​
749 box, ​
750 params.shadow1.offset, ​
751 params.shadow1.radius, ​
752 withOpacity(g_shadowColor, params.shadow1.opacity * strength)); 743​ withOpacity(g_shadowColor, params.shadow1.opacity * strength));
753 744​ shadowRenderer.addShadow(params.shadow2.offset, params.shadow2.radius,
754 // Draw the "contrast" shadow. ​
755 BoxShadowHelper::boxShadow( ​
756 &painter, ​
757 box, ​
758 params.shadow2.offset, ​
759 params.shadow2.radius, ​
760 withOpacity(g_shadowColor, params.shadow2.opacity * strength)); 745​ withOpacity(g_shadowColor, params.shadow2.opacity * strength));
761 746​
747​ QImage shadowTexture = shadowRenderer.render();
748​
749​ QPainter painter(&shadowTexture);
750​ painter.setRenderHint(QPainter::Antialiasing);
751​
752​ const QRect outerRect = shadowTexture.rect();
753​
754​ QRect boxRect(QPoint(0, 0), boxSize);
755​ boxRect.moveCenter(outerRect.center());
756​
762 // Mask out inner rect. 757​ // Mask out inner rect.
763 const QMargins padding = QMargins( 758​ const QMargins padding = QMargins(
764 shadowSize - Metrics::Shadow_Overlap - params.offset.x(), 759​ boxRect.left() - outerRect.left() - Metrics::Shadow_Overlap - params.offset.x(),
765 shadowSize - Metrics::Shadow_Overlap - params.offset.y(), 760​ boxRect.top() - outerRect.top() - Metrics::Shadow_Overlap - params.offset.y(),
766 shadowSize - Metrics::Shadow_Overlap + params.offset.x(), 761​ outerRect.right() - boxRect.right() - Metrics::Shadow_Overlap + params.offset.x(),
767 shadowSize - Metrics::Shadow_Overlap + params.offset.y()); 762​ outerRect.bottom() - boxRect.bottom() - Metrics::Shadow_Overlap + params.offset.y());
768 const QRect innerRect = rect - padding; 763​ const QRect innerRect = outerRect - padding;
769 764​
770 painter.setPen(Qt::NoPen); 765​ painter.setPen(Qt::NoPen);
771 painter.setBrush(Qt::black); 766​ painter.setBrush(Qt::black);
772 painter.setCompositionMode(QPainter::CompositionMode_DestinationOut); 767​ painter.setCompositionMode(QPainter::CompositionMode_DestinationOut);
773 painter.drawRoundedRect( 768​ painter.drawRoundedRect(
774 innerRect, 769​ innerRect,
775 Metrics::Frame_FrameRadius + 0.5, 770​ Metrics::Frame_FrameRadius + 0.5,
776 Metrics::Frame_FrameRadius + 0.5); 771​ Metrics::Frame_FrameRadius + 0.5);
777 772​
778 // Draw outline. 773​ // Draw outline.
779 painter.setPen(withOpacity(g_shadowColor, 0.2 * strength)); 774​ painter.setPen(withOpacity(g_shadowColor, 0.2 * strength));
780 painter.setBrush(Qt::NoBrush); 775​ painter.setBrush(Qt::NoBrush);
781 painter.setCompositionMode(QPainter::CompositionMode_SourceOver); 776​ painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
782 painter.drawRoundedRect( 777​ painter.drawRoundedRect(
783 innerRect, 778​ innerRect,
784 Metrics::Frame_FrameRadius - 0.5, 779​ Metrics::Frame_FrameRadius - 0.5,
785 Metrics::Frame_FrameRadius - 0.5); 780​ Metrics::Frame_FrameRadius - 0.5);
786 781​
787 painter.end(); 782​ painter.end();
788 783​
789 g_sShadow = QSharedPointer<KDecoration2::DecorationShadow>::create(); 784​ g_sShadow = QSharedPointer<KDecoration2::DecorationShadow>::create();
790 g_sShadow->setPadding(padding); 785​ g_sShadow->setPadding(padding);
791 g_sShadow->setInnerShadowRect(QRect(shadow.rect().center(), QSize(1, 1))); 786​ g_sShadow->setInnerShadowRect(QRect(outerRect.center(), QSize(1, 1)));
792 g_sShadow->setShadow(shadow); 787​ g_sShadow->setShadow(shadowTexture);
793 } 788​ }
794 789​
795 setShadow(g_sShadow); 790​ setShadow(g_sShadow);
796 } 791​ }
797 792​
798 //_________________________________________________________________ 793​ //_________________________________________________________________
799 void Decoration::createSizeGrip() 794​ void Decoration::createSizeGrip()
800 { 795​ {
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