From 6a2af03c68033a9683de619b4ae6493a4f7254b7 Mon Sep 17 00:00:00 2001 From: Ken Moore Date: Thu, 13 Jul 2017 14:02:59 -0400 Subject: Large update to the window embedding systems - almost have the compositing up and running. --- src-qt5/core/libLumina/NativeEmbedWidget.cpp | 185 +++++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 src-qt5/core/libLumina/NativeEmbedWidget.cpp (limited to 'src-qt5/core/libLumina/NativeEmbedWidget.cpp') diff --git a/src-qt5/core/libLumina/NativeEmbedWidget.cpp b/src-qt5/core/libLumina/NativeEmbedWidget.cpp new file mode 100644 index 00000000..fd5939dd --- /dev/null +++ b/src-qt5/core/libLumina/NativeEmbedWidget.cpp @@ -0,0 +1,185 @@ +//=========================================== +// Lumina-DE source code +// Copyright (c) 2017, Ken Moore +// Available under the 3-clause BSD license +// See the LICENSE file for full details +//=========================================== +#include "NativeEmbedWidget.h" + +#include +#include +#include + +#include +#include +#include +#include +#include + +//xcb_pixmap_t PIXBACK; //backend pixmap that compositing redirects to + +#define NORMAL_WIN_EVENT_MASK (XCB_EVENT_MASK_BUTTON_PRESS | \ + XCB_EVENT_MASK_BUTTON_RELEASE | \ + XCB_EVENT_MASK_POINTER_MOTION | \ + XCB_EVENT_MASK_BUTTON_MOTION | \ + XCB_EVENT_MASK_EXPOSURE | \ + XCB_EVENT_MASK_STRUCTURE_NOTIFY | \ + XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | \ + XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | \ + XCB_EVENT_MASK_ENTER_WINDOW| \ + XCB_EVENT_MASK_PROPERTY_CHANGE) + +inline void registerClientEvents(WId id){ + uint32_t value_list[1] = {NORMAL_WIN_EVENT_MASK}; + xcb_change_window_attributes(QX11Info::connection(), id, XCB_CW_EVENT_MASK, value_list); +} + +// ============ +// PRIVATE +// ============ +//Simplification functions for the XCB/XLib interactions +void NativeEmbedWidget::syncWinSize(QSize sz){ + if(WIN==0){ return; } + qDebug() << "Sync Window Size:" << sz; + xcb_configure_window_value_list_t valList; + valList.x = 0; + valList.y = 0; + valList.width = sz.width(); + valList.height = sz.height(); + uint16_t mask = 0; + mask = mask | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT; + mask = mask | XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y; + xcb_configure_window_aux(QX11Info::connection(), WIN->id(), mask, &valList); +} + +void NativeEmbedWidget::syncWidgetSize(QSize sz){ + this->resize(sz); +} + +void NativeEmbedWidget::hideWindow(){ + xcb_unmap_window(QX11Info::connection(), WIN->id()); +} + +void NativeEmbedWidget::showWindow(){ + xcb_map_window(QX11Info::connection(), WIN->id()); +} + +QImage NativeEmbedWidget::windowImage(QRect geom){ + //Need the graphics context of the window + /*xcb_gcontext_t gc = xcb_generate_id(QX11Info::connection()); + xcb_screen_t *screen = xcb_setup_roots_iterator(xcb_get_setup(QX11Info::connection())).data; + uint32_t values[1]; + values[0] = screen->black_pixel; + xcb_create_gc(QX11Info::connection(), + gc, + this->winId(), + XCB_GC_BACKGROUND, + values ); + xcb_pixmap_t pix = xcb_generate_id(QX11Info::connection()); + xcb_composite_name_window_pixmap(QX11Info::connection(), WIN->id(), pix); + //Now copy this pixmap onto widget + xcb_copy_area(QX11Info::connection(), pix, this->winId(), gc, geom.x(),geom.y(),geom.x(),geom.y(),geom.width(), geom.height()); + xcb_free_pixmap(QX11Info::connection(), pix); + return QImage();*/ + + /*xcb_put_image(QX11Info::connection(), XCB_IMAGE_FORMAT_Z_PIXMAP, pix, gc, sz.width(), sz.height(), 0, 0, */ + /*xcb_image_t *img = xcb_image_get(QX11Info::connection(), WIN->id(), geom.x(), geom.y(), geom.width(), geom.height(), 1, XCB_IMAGE_FORMAT_Z_PIXMAP); + if(img==0){ return QImage(); } + QImage image(geom.size(), QImage::Format_ARGB32); + image.loadFromData(img->data, img->size); + return image;*/ + +} + +// ============ +// PUBLIC +// ============ +NativeEmbedWidget::NativeEmbedWidget(QWidget *parent) : QWidget(parent){ + WIN = 0; //nothing embedded yet + this->setStyleSheet("background: transparent;"); //this widget should be fully-transparent to Qt itself (will paint on top of that) +} + +bool NativeEmbedWidget::embedWindow(NativeWindow *window){ + WIN = window; + //PIXBACK = xcb_generate_id(QX11Info::connection()); + xcb_reparent_window(QX11Info::connection(), WIN->id(), this->winId(), 0, 0); + //Now send the embed event to the app + //qDebug() << " - send _XEMBED event"; + /*xcb_client_message_event_t event; + event.response_type = XCB_CLIENT_MESSAGE; + event.format = 32; + event.window = WIN->id(); + event.type = obj->ATOMS["_XEMBED"]; //_XEMBED + event.data.data32[0] = XCB_TIME_CURRENT_TIME; //CurrentTime; + event.data.data32[1] = 0; //XEMBED_EMBEDDED_NOTIFY + event.data.data32[2] = 0; + event.data.data32[3] = this->winId(); //WID of the container + event.data.data32[4] = 0; + + xcb_send_event(QX11Info::connection(), 0, WIN->id(), XCB_EVENT_MASK_STRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (const char *) &event); + */ + //Now setup any redirects and return + //this->SelectInput(WIN->id(), true); //Notify of structure changes + //xcb_composite_redirect_window(QX11Info::connection(), WIN->id(), XCB_COMPOSITE_REDIRECT_MANUAL); //XCB_COMPOSITE_REDIRECT_[MANUAL/AUTOMATIC]); + + //xcb_composite_name_window_pixmap(QX11Info::connection(), WIN->id(), PIXBACK); + //Now map the window (will be a transparent child of the container) + //xcb_map_window(QX11Info::connection(), WIN->id()); + //xcb_map_window(QX11Info::connection(), this->winId()); + //Now create/register the damage handler + // -- XCB (Note: The XCB damage registration is completely broken at the moment - 9/15/15, Ken Moore) + // -- Retested 6/29/17 (no change) Ken Moore + //xcb_damage_damage_t dmgID = xcb_generate_id(QX11Info::connection()); //This is a typedef for a 32-bit unsigned integer + //xcb_damage_create(QX11Info::connection(), dmgID, WIN->id(), XCB_DAMAGE_REPORT_LEVEL_RAW_RECTANGLES); + // -- XLib (Note: This is only used because the XCB routine above does not work - needs to be fixed upstream in XCB itself). + Damage dmgID = XDamageCreate(QX11Info::display(), WIN->id(), XDamageReportRawRectangles); + WIN->addDamageID( (uint) dmgID); //save this for later + WIN->addFrameWinID(this->winId()); + connect(WIN, SIGNAL(VisualChanged()), this, SLOT(update()) ); //make sure we repaint the widget on visual change + + registerClientEvents(WIN->id()); + registerClientEvents(this->winId()); + return true; +} + +bool NativeEmbedWidget::detachWindow(){ + xcb_reparent_window(QX11Info::connection(), WIN->id(), QX11Info::appRootWindow(), -1, -1); + WIN = 0; +} + +bool NativeEmbedWidget::isEmbedded(){ + return (WIN!=0); +} + +// ============== +// PROTECTED +// ============== +void NativeEmbedWidget::resizeEvent(QResizeEvent *ev){ + if(WIN!=0){ syncWinSize(ev->size()); } //syncronize the window with the new widget size + QWidget::resizeEvent(ev); +} + +void NativeEmbedWidget::showEvent(QShowEvent *ev){ + if(WIN!=0){ showWindow(); } + QWidget::showEvent(ev); +} + +void NativeEmbedWidget::hideEvent(QHideEvent *ev){ + if(WIN!=0){ hideWindow(); } + QWidget::hideEvent(ev); +} + +void NativeEmbedWidget::paintEvent(QPaintEvent *ev){ + //QWidget::paintEvent(ev); //ensure all the Qt-compositing is done first + if(WIN==0){ QWidget::paintEvent(ev); return; } + //Need to paint the image from the window onto the widget as an overlay + QImage img = windowImage(ev->rect()); + if(!img.isNull()){ + QPainter P(this); + P.drawImage( ev->rect() , img, ev->rect(), Qt::NoOpaqueDetection); //1-to-1 mapping + //Note: Qt::NoOpaqueDetection Speeds up the paint by bypassing the checks to see if there are [semi-]transparent pixels + // Since this is an embedded image - we fully expect there to be transparency most of the time. + }else{ + QWidget::paintEvent(ev); + } +} -- cgit