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kwin/outline.cpp
Martin Gräßlin 2a935c523f Make QmlPath in Outline configurable 
Fixes a TODO in the code and has the slight advantage that we can
disable the Outline from integration tests by pointing to a not
existing file.
2016-01-29 09:50:52 +01:00

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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>
Copyright (C) 2013 Martin Gräßlin <mgraesslin@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
// own
#include "outline.h"
// KWin
#include "composite.h"
#include "scripting/scripting.h"
// KWin libs
#include <kwinxrenderutils.h>
#include "workspace.h"
// Frameworks
#include <KConfigGroup>
// Qt
#include <QDebug>
#include <QQmlComponent>
#include <QQmlContext>
#include <QQmlEngine>
#include <QQuickWindow>
#include <QStandardPaths>
// xcb
#include <xcb/render.h>
namespace KWin {
KWIN_SINGLETON_FACTORY(Outline)
Outline::Outline(QObject *parent)
: QObject(parent)
, m_active(false)
{
connect(Compositor::self(), SIGNAL(compositingToggled(bool)), SLOT(compositingChanged()));
}
Outline::~Outline()
{
}
void Outline::show()
{
m_active = true;
emit activeChanged();
if (m_visual.isNull()) {
createHelper();
}
if (m_visual.isNull()) {
// something went wrong
return;
}
m_visual->show();
}
void Outline::hide()
{
if (!m_active) {
return;
}
m_active = false;
emit activeChanged();
if (m_visual.isNull()) {
return;
}
m_visual->hide();
}
void Outline::show(const QRect& outlineGeometry)
{
setGeometry(outlineGeometry);
show();
}
void Outline::setGeometry(const QRect& outlineGeometry)
{
if (m_outlineGeometry == outlineGeometry) {
return;
}
m_outlineGeometry = outlineGeometry;
emit geometryChanged();
}
void Outline::createHelper()
{
if (!m_visual.isNull()) {
return;
}
if (Compositor::compositing()) {
m_visual.reset(new CompositedOutlineVisual(this));
} else {
m_visual.reset(new NonCompositedOutlineVisual(this));
}
}
void Outline::compositingChanged()
{
m_visual.reset();
if (m_active) {
show();
}
}
OutlineVisual::OutlineVisual(Outline *outline)
: m_outline(outline)
{
}
OutlineVisual::~OutlineVisual()
{
}
CompositedOutlineVisual::CompositedOutlineVisual(Outline *outline)
: OutlineVisual(outline)
, m_qmlContext()
, m_qmlComponent()
, m_mainItem()
{
}
CompositedOutlineVisual::~CompositedOutlineVisual()
{
}
void CompositedOutlineVisual::hide()
{
if (QQuickWindow *w = qobject_cast<QQuickWindow*>(m_mainItem.data())) {
w->hide();
w->destroy();
}
}
void CompositedOutlineVisual::show()
{
if (m_qmlContext.isNull()) {
m_qmlContext.reset(new QQmlContext(Scripting::self()->qmlEngine()));
m_qmlContext->setContextProperty(QStringLiteral("outline"), outline());
}
if (m_qmlComponent.isNull()) {
m_qmlComponent.reset(new QQmlComponent(Scripting::self()->qmlEngine()));
const QString fileName = QStandardPaths::locate(QStandardPaths::GenericDataLocation,
kwinApp()->config()->group(QStringLiteral("Outline")).readEntry("QmlPath", QStringLiteral(KWIN_NAME "/outline/plasma/outline.qml")));
if (fileName.isEmpty()) {
qCDebug(KWIN_CORE) << "Could not locate outline.qml";
return;
}
m_qmlComponent->loadUrl(QUrl::fromLocalFile(fileName));
if (m_qmlComponent->isError()) {
qCDebug(KWIN_CORE) << "Component failed to load: " << m_qmlComponent->errors();
} else {
m_mainItem.reset(m_qmlComponent->create(m_qmlContext.data()));
}
}
}
NonCompositedOutlineVisual::NonCompositedOutlineVisual(Outline *outline)
: OutlineVisual(outline)
, m_initialized(false)
{
}
NonCompositedOutlineVisual::~NonCompositedOutlineVisual()
{
}
void NonCompositedOutlineVisual::show()
{
if (!m_initialized) {
const QRect geo(0, 0, 1, 1);
const uint32_t values[] = {true};
// TODO: use template variant
m_leftOutline.create(geo, XCB_CW_OVERRIDE_REDIRECT, values);
m_rightOutline.create(geo, XCB_CW_OVERRIDE_REDIRECT, values);
m_topOutline.create(geo, XCB_CW_OVERRIDE_REDIRECT, values);
m_bottomOutline.create(geo, XCB_CW_OVERRIDE_REDIRECT, values);
m_initialized = true;
}
const int defaultDepth = Xcb::defaultDepth();
const QRect &outlineGeometry = outline()->geometry();
// left/right parts are between top/bottom, they don't reach as far as the corners
const uint16_t verticalWidth = 5;
const uint16_t verticalHeight = outlineGeometry.height() - 10;
const uint16_t horizontalWidth = outlineGeometry.width();
const uint horizontalHeight = 5;
m_leftOutline.setGeometry(outlineGeometry.x(), outlineGeometry.y() + 5, verticalWidth, verticalHeight);
m_rightOutline.setGeometry(outlineGeometry.x() + outlineGeometry.width() - 5, outlineGeometry.y() + 5, verticalWidth, verticalHeight);
m_topOutline.setGeometry(outlineGeometry.x(), outlineGeometry.y(), horizontalWidth, horizontalHeight);
m_bottomOutline.setGeometry(outlineGeometry.x(), outlineGeometry.y() + outlineGeometry.height() - 5, horizontalWidth, horizontalHeight);
const xcb_render_color_t white = {0xffff, 0xffff, 0xffff, 0xffff};
QColor qGray(Qt::gray);
const xcb_render_color_t gray = {
uint16_t(0xffff * qGray.redF()),
uint16_t(0xffff * qGray.greenF()),
uint16_t(0xffff * qGray.blueF()),
0xffff
};
const xcb_render_color_t black = {0, 0, 0, 0xffff};
{
xcb_pixmap_t xpix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), defaultDepth, xpix, rootWindow(), verticalWidth, verticalHeight);
XRenderPicture pic(xpix, defaultDepth);
xcb_rectangle_t rect = {0, 0, 5, verticalHeight};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, white, 1, &rect);
rect.x = 1;
rect.width = 3;
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, gray, 1, &rect);
rect.x = 2;
rect.width = 1;
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, black, 1, &rect);
m_leftOutline.setBackgroundPixmap(xpix);
m_rightOutline.setBackgroundPixmap(xpix);
// According to the XSetWindowBackgroundPixmap documentation the pixmap can be freed.
xcb_free_pixmap(connection(), xpix);
}
{
xcb_pixmap_t xpix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), defaultDepth, xpix, rootWindow(), horizontalWidth, horizontalHeight);
XRenderPicture pic(xpix, defaultDepth);
xcb_rectangle_t rect = {0, 0, horizontalWidth, horizontalHeight};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, white, 1, &rect);
xcb_rectangle_t grayRects[] = {
{1, 1, uint16_t(horizontalWidth -2), 3},
{1, 4, 3, 1},
{int16_t(horizontalWidth - 4), 4, 3, 1}
};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, gray, 3, grayRects);
xcb_rectangle_t blackRects[] = {
{2, 2, uint16_t(horizontalWidth -4), 1},
{2, 3, 1, 2},
{int16_t(horizontalWidth - 3), 3, 1, 2}
};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, black, 3, blackRects);
m_topOutline.setBackgroundPixmap(xpix);
// According to the XSetWindowBackgroundPixmap documentation the pixmap can be freed.
xcb_free_pixmap(connection(), xpix);
}
{
xcb_pixmap_t xpix = xcb_generate_id(connection());
xcb_create_pixmap(connection(), defaultDepth, xpix, rootWindow(), outlineGeometry.width(), 5);
XRenderPicture pic(xpix, defaultDepth);
xcb_rectangle_t rect = {0, 0, horizontalWidth, horizontalHeight};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, white, 1, &rect);
xcb_rectangle_t grayRects[] = {
{1, 1, uint16_t(horizontalWidth -2), 3},
{1, 0, 3, 1},
{int16_t(horizontalWidth - 4), 0, 3, 1}
};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, gray, 3, grayRects);
xcb_rectangle_t blackRects[] = {
{2, 2, uint16_t(horizontalWidth -4), 1},
{2, 0, 1, 2},
{int16_t(horizontalWidth - 3), 0, 1, 2}
};
xcb_render_fill_rectangles(connection(), XCB_RENDER_PICT_OP_SRC, pic, black, 3, blackRects);
m_bottomOutline.setBackgroundPixmap(xpix);
// According to the XSetWindowBackgroundPixmap documentation the pixmap can be freed.
xcb_free_pixmap(connection(), xpix);
}
forEachWindow(&Xcb::Window::clear);
forEachWindow(&Xcb::Window::map);
}
void NonCompositedOutlineVisual::hide()
{
forEachWindow(&Xcb::Window::unmap);
}
} // namespace
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