Merge pull request #13 from pinebit/image_to_skype_win

 clipboard image is not pasted in 'Skype' (win)

dialogs/helpdialog.cpp

@@ -24,7 +24,7 @@ HelpDialog::HelpDialog(const QString& path, const QString& page, QWidget* parent
     checkBox->setCheckState(Qt::Checked);
 
     QPushButton* closeButton = new QPushButton(tr("Close"));
-    connect(closeButton, QPushButton::clicked, this, &HelpDialog::reject);
+    connect(closeButton, &QPushButton::clicked, this, &HelpDialog::reject);
 
     QHBoxLayout *buttonLayout = new QHBoxLayout;
     buttonLayout->addWidget(checkBox);

mainwindow.cpp

@@ -37,6 +37,7 @@
 #include "selector/cvselector.h"
 #include "userselection.h"
 #include "params.h"
+#include <platform/platform.h>
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
@@ -75,21 +76,18 @@ void MainWindow::slotActionCapture()
 
 void MainWindow::slotActionPaste()
 {
-    QClipboard *clipboard = QApplication::clipboard();
-    QImage image = clipboard->image();
-    if (image.isNull()) {
+    QImage image;
+    if (!tryPasteFromClipboard(image)) {
         _statusbar->showMessage(tr("Clipboard has no image."));
+        return;
     }
-    else {
-        updateImage(image);
-    }
+    updateImage(image);
+    _statusbar->showMessage(tr("Pasted from the clipboard."));
 }
 
 void MainWindow::slotActionCopy()
 {
-    QClipboard *clipboard = QApplication::clipboard();
-    clipboard->setImage(_rsview->renderToPixmap().toImage());
-
+    copyToClipboard(_rsview->renderToPixmap().toImage());
     _statusbar->showMessage(tr("Copied to the clipboard."));
 }
 

platform/generic/clipboard.cpp

@@ -0,0 +1,13 @@
+#include "clipboard.h"
+
+#include <QApplication>
+#include <QClipboard>
+
+void copyToClipboard(const QImage& image){
+    QApplication::clipboard()->setImage(image);
+}
+
+bool tryPasteFromClipboard(QImage& image) {
+   image = QApplication::clipboard()->image();
+   return (!image.isNull()) ? true : false;
+}

platform/generic/clipboard.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <QImage>
+
+void copyToClipboard(const QImage& image);
+bool tryPasteFromClipboard(QImage& image);

platform/generic/generic.pri

@@ -0,0 +1,9 @@
+CONFIG  += static staticlib c++11
+
+INCLUDEPATH += $$PWD
+
+HEADERS += \
+    $$PWD/clipboard.h
+
+SOURCES += \
+    $$PWD/clipboard.cpp

platform/platform.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#ifdef Q_OS_WIN
+    #include <platform/windows/clipboard.h>
+#else
+    #include <platform/generic/clipboard.h>
+#endif

platform/platform.pri

@@ -0,0 +1,9 @@
+win32 {
+    include(windows/windows.pri)
+}
+unix:!macx {
+    include(generic/generic.pri)
+}
+macx {
+    include(generic/generic.pri)
+}

platform/windows/clipboard.cpp

@@ -0,0 +1,22 @@
+#include "clipboard.h"
+#include "image.h"
+
+#include <QApplication>
+#include <QClipboard>
+
+void copyToClipboard(const QImage& image){
+    HBITMAP bitmap = image::convertQImageToHBITMAP(image);
+    if(bitmap) {
+        if (::OpenClipboard(NULL)){
+            ::EmptyClipboard();
+            ::SetClipboardData(CF_BITMAP, bitmap);
+            ::CloseClipboard();
+        }
+        DeleteObject(bitmap);
+    }
+}
+
+bool tryPasteFromClipboard(QImage& image) {
+   image = QApplication::clipboard()->image();
+   return (!image.isNull()) ? true : false;
+}

platform/windows/clipboard.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <QImage>
+
+void copyToClipboard(const QImage& image);
+bool tryPasteFromClipboard(QImage& image);

platform/windows/image.cpp

@@ -0,0 +1,56 @@
+
+#include "image.h"
+
+HBITMAP image::convertQImageToHBITMAP(const QImage& image){
+    if (image.isNull())
+       return 0;
+
+    HDC displayDC = ::GetDC(NULL);
+    HDC memoryDC = ::CreateCompatibleDC(NULL);
+    if (!displayDC || !memoryDC){
+        return 0;
+    }
+    // it is a memory memoryDC that must have a handle selected into it
+    HBITMAP dummyBitmap = ::CreateCompatibleBitmap(displayDC, image.width(), image.height());
+    ::ReleaseDC(NULL, displayDC);
+    HBITMAP oldBitmap = (HBITMAP) ::SelectObject(memoryDC, dummyBitmap);
+
+    BITMAPINFO info;
+    ::memset(&info, 0, sizeof(info));
+    info.bmiHeader.biBitCount = image.depth();
+    info.bmiHeader.biClrImportant = 0;
+    info.bmiHeader.biClrUsed = 0;
+    info.bmiHeader.biCompression = BI_RGB;
+    info.bmiHeader.biHeight = -image.height();
+    info.bmiHeader.biWidth = image.width();
+    info.bmiHeader.biPlanes = 1;
+    info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+    info.bmiHeader.biSizeImage = image.width() * image.height() * 4;
+
+    HBITMAP bitmap = ::CreateDIBitmap(memoryDC, &info.bmiHeader, CBM_INIT, image.constBits(),(LPBITMAPINFO) &info, DIB_RGB_COLORS);
+    if (bitmap) {
+        ::SelectObject(memoryDC, oldBitmap);
+        ::DeleteObject(dummyBitmap);
+        ::DeleteDC(memoryDC);
+    }
+    return bitmap;
+}
+
+HBITMAP image::captureQWidget(const QWidget& widget){
+    HWND hWnd = (HWND)widget.winId();
+    HDC displayDC = ::GetDC(hWnd);
+    if (!displayDC){
+        return 0;
+    }
+    RECT rectWindow;
+    ::GetWindowRect(hWnd, &rectWindow);
+
+    HDC memoryDC = ::CreateCompatibleDC(displayDC);
+    HBITMAP bitmap = ::CreateCompatibleBitmap(displayDC, rectWindow.right - rectWindow.left, rectWindow.bottom - rectWindow.top);
+    if (bitmap) {
+        ::SelectObject(memoryDC, bitmap);
+        ::BitBlt(memoryDC, 0, 0, rectWindow.right - rectWindow.left, rectWindow.bottom - rectWindow.top, displayDC, rectWindow.left, rectWindow.top, SRCCOPY);
+    }
+    ::ReleaseDC(hWnd, memoryDC);
+    return bitmap;
+}

platform/windows/image.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <QImage>
+#include <QWidget>
+
+#include <windows.h>
+#include <wingdi.h>
+
+class image
+{
+public:
+    static HBITMAP convertQImageToHBITMAP(const QImage& image);
+    static HBITMAP captureQWidget(const QWidget& widget);
+};

platform/windows/windows.pri

@@ -0,0 +1,12 @@
+CONFIG  += static staticlib c++11
+LIBS    += -luser32
+
+INCLUDEPATH += $$PWD
+
+HEADERS += \
+    $$PWD/image.h \
+    $$PWD/clipboard.h
+
+SOURCES += \
+    $$PWD/image.cpp \
+    $$PWD/clipboard.cpp

reverscreen.pro

@@ -66,6 +66,7 @@ OPENCV_PATH = C:/Opencv/mingw_debug
 INCLUDEPATH += $$OPENCV_PATH/include
 LIBS += -L"$$OPENCV_PATH/x86/mingw/lib"
 LIBS += -lopencv_core2413.dll -lopencv_imgproc2413.dll
+LIBS += -lgdi32
 
 QMAKE_LFLAGS_RELEASE += -static -static-libgcc
 
@@ -85,6 +86,7 @@ QMAKE_INFO_PLIST = Info.plist
 
 QMAKE_CXXFLAGS += -Wno-deprecated-declarations
 
+include(platform/platform.pri)
 include(QtAwesome/QtAwesome.pri)
 
 SUBDIRS += QtAwesome/QtAwesome.pro \
@@ -109,3 +111,4 @@ DISTFILES += \
     LICENSE \
     README.md \
     nsis/reverscreen.nsi
+