新功能：Imagecomposition功能开发

PaintingDemo/Imagecomposition/Image.qrc

+<RCC>
+    <qresource prefix="/">
+        <file>images/butterfly.png</file>
+        <file>images/checker.png</file>
+    </qresource>
+</RCC>

PaintingDemo/Imagecomposition/Imagecomposition.pro

@@ -42,3 +42,6 @@ msvc {
 QMAKE_CFLAGS += /utf-8
 QMAKE_CXXFLAGS += /utf-8
 }
+
+RESOURCES += \
+    Image.qrc

PaintingDemo/Imagecomposition/widget.cpp

 #include "widget.h"
 #include "ui_widget.h"
+#include <QDebug>
 
 Widget::Widget(QWidget *parent)
     : QWidget(parent)
     , ui(new Ui::Widget)
 {
     ui->setupUi(this);
+
+    addOp(QPainter::CompositionMode_SourceOver,       "SourceOver");
+    addOp(QPainter::CompositionMode_DestinationOver,  "DestinationOver");
+    addOp(QPainter::CompositionMode_Clear,            "Clear");
+    addOp(QPainter::CompositionMode_Source,           "Source");
+    addOp(QPainter::CompositionMode_Destination,      "Destination");
+    addOp(QPainter::CompositionMode_SourceIn,         "SourceIn");
+    addOp(QPainter::CompositionMode_DestinationIn,    "DestinationIn");
+    addOp(QPainter::CompositionMode_SourceOut,        "SourceOut");
+    addOp(QPainter::CompositionMode_DestinationOut,   "DestinationOut");
+    addOp(QPainter::CompositionMode_SourceAtop,       "SourceAtop");
+    addOp(QPainter::CompositionMode_DestinationAtop,  "DestinationAtop");
+    addOp(QPainter::CompositionMode_Xor,              "Xor");
+
+    // svg 1.2混合模式
+    addOp(QPainter::CompositionMode_Plus,             "Plus");
+    addOp(QPainter::CompositionMode_Multiply,         "Multiply");
+    addOp(QPainter::CompositionMode_Screen,           "Screen");
+    addOp(QPainter::CompositionMode_Overlay,          "Overlay");
+    addOp(QPainter::CompositionMode_Darken,           "Darken");
+    addOp(QPainter::CompositionMode_Lighten,          "Lighten");
+    addOp(QPainter::CompositionMode_ColorDodge,       "ColorDodge");
+    addOp(QPainter::CompositionMode_ColorBurn,        "ColorBurn");
+    addOp(QPainter::CompositionMode_HardLight,        "HardLight");
+    addOp(QPainter::CompositionMode_SoftLight,        "SoftLight");
+    addOp(QPainter::CompositionMode_Difference,       "Difference");
+    addOp(QPainter::CompositionMode_Exclusion,        "Exclusion");
+
+    // ROPs
+    addOp(QPainter::RasterOp_SourceOrDestination,         "SourceOrDestination");
+    addOp(QPainter::RasterOp_SourceAndDestination,        "SourceAndDestination");
+    addOp(QPainter::RasterOp_SourceXorDestination,        "SourceXorDestination");
+    addOp(QPainter::RasterOp_NotSourceAndNotDestination,  "NotSourceAndNotDestination");
+    addOp(QPainter::RasterOp_NotSourceOrNotDestination,   "NotSourceOrNotDestination");
+    addOp(QPainter::RasterOp_NotSourceXorDestination,     "NotSourceXorDestination");
+    addOp(QPainter::RasterOp_NotSource,                   "NotSource");
+    addOp(QPainter::RasterOp_NotSourceAndDestination,     "NotSourceAndDestination");
+    addOp(QPainter::RasterOp_SourceAndNotDestination,     "SourceAndNotDestination");
+    addOp(QPainter::RasterOp_NotSourceOrDestination,      "NotSourceOrDestination");
+    addOp(QPainter::RasterOp_SourceOrNotDestination,      "SourceOrNotDestination");
+    addOp(QPainter::RasterOp_ClearDestination,            "ClearDestination");
+    addOp(QPainter::RasterOp_SetDestination,              "SetDestination");
+    addOp(QPainter::RasterOp_NotDestination,              "NotDestination");
+
 }
 
 Widget::~Widget()
@@ -13,3 +58,34 @@ Widget::~Widget()
     delete ui;
 }
 
+void Widget::addOp(QPainter::CompositionMode mode, const QString &name)
+{
+    ui->operatorComboBox->addItem(name, mode);
+}
+
+void Widget::loadImage(const QString &fileName, QImage &image, QToolButton *button)
+{
+    if(!image.load(fileName))   // 加载图片
+    {
+        return;
+    }
+    image = image.scaled(ui->sourceButton->size(), Qt::KeepAspectRatio);
+
+}
+
+
+void Widget::on_sourceButton_clicked()
+{
+
+}
+
+
+void Widget::on_destinationButton_clicked()
+{
+
+}
+
+void Widget::on_operatorComboBox_currentIndexChanged(int index)
+{
+
+}

PaintingDemo/Imagecomposition/widget.h

@@ -2,6 +2,8 @@
 #define WIDGET_H
 
 #include <QWidget>
+#include <QPainter>
+#include <QToolButton>
 
 QT_BEGIN_NAMESPACE
 namespace Ui { class Widget; }
@@ -15,7 +17,21 @@ public:
     Widget(QWidget *parent = nullptr);
     ~Widget();
 
+private slots:
+    void on_sourceButton_clicked();
+
+    void on_destinationButton_clicked();
+
+    void on_operatorComboBox_currentIndexChanged(int index);
+
+private:
+    void addOp(QPainter::CompositionMode mode, const QString &name);
+    void loadImage(const QString &fileName, QImage& image, QToolButton *button);
+
 private:
     Ui::Widget *ui;
+    QImage sourceImage;
+    QImage destinationImage;
+    QImage resultImage;
 };
 #endif // WIDGET_H

PaintingDemo/Imagecomposition/widget.ui

@@ -6,13 +6,77 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>800</width>
-    <height>600</height>
+    <width>1051</width>
+    <height>290</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Widget</string>
   </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="0" column="1">
+    <widget class="QComboBox" name="operatorComboBox"/>
+   </item>
+   <item row="0" column="3">
+    <widget class="QLabel" name="label">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="font">
+      <font>
+       <pointsize>31</pointsize>
+       <weight>75</weight>
+       <bold>true</bold>
+      </font>
+     </property>
+     <property name="text">
+      <string>=</string>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="4">
+    <widget class="QLabel" name="resultLabel">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="0">
+    <widget class="QToolButton" name="sourceButton">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Minimum" vsizetype="Preferred">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="2">
+    <widget class="QToolButton" name="destinationButton">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Minimum" vsizetype="Preferred">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string/>
+     </property>
+    </widget>
+   </item>
+  </layout>
  </widget>
  <resources/>
  <connections/>