draw point finished

src/CMakeLists.txt

@@ -1,5 +1,8 @@
-add_executable(gtktest gtktest.cc Rgba.cc)
+add_executable(gtktest gtktest.cc Rgba.cc Rester.cc)
 target_link_libraries (gtktest ${FC_DEP_LIBS})
 
 add_executable(timer timer.cc)
+target_link_libraries (timer ${FC_DEP_LIBS})
+
+add_executable(tt tt.cc Rgba.cc)
 target_link_libraries (timer ${FC_DEP_LIBS})

src/Rester.cc

@@ -0,0 +1,71 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+/* 
+ * File:   Rester.cc
+ * Author: blobt
+ * 
+ * Created on January 23, 2020, 6:00 PM
+ */
+
+#include "Rgba.h"
+#include "Rester.h"
+#include <stdio.h>
+#include <iostream>
+#include <string.h>
+
+using namespace std;
+
+Rester::Rester(int width, int height) {
+    _width = width;
+    _height = height;
+
+    buffer = new Rgba[width * height];
+}
+
+Rester::~Rester() {
+    delete buffer;
+}
+
+void Rester::drawPointer(int x, int y, Rgba color, int pointSize) {
+    switch (pointSize) {
+        case 1:
+            setPixel(x, y, color);
+        case 2:
+            setPixel(x, y, color);
+            setPixel(x + 1, y, color);
+            setPixel(x, y + 1, color);
+            setPixel(x + 1, y + 1, color);
+        case 3:
+            setPixel(x - 1, y - 1, color);
+            setPixel(x, y - 1, color);
+            setPixel(x + 1, y - 1, color);
+
+            setPixel(x - 1, y, color);
+            setPixel(x, y, color);
+            setPixel(x + 1, y, color);
+
+            setPixel(x - 1, y + 1, color);
+            setPixel(x, y + 1, color);
+            setPixel(x + 1, y + 1, color);
+    }
+}
+
+int Rester::size() {
+    return _width * _height * sizeof (Rgba);
+}
+
+void Rester::clean() {
+    memset(buffer, 0, size());
+}
+
+bool Rester::setPixel(int x, int y, Rgba color) {
+    if (x < 0 || y < 0 || x >= 500 || y >= 500) {
+        return false;
+    }
+    //行列是反的
+    buffer[y * _width + x] = color;
+}

src/Rester.h

@@ -0,0 +1,32 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+/* 
+ * File:   Rester.h
+ * Author: blobt
+ *
+ * Created on January 23, 2020, 6:00 PM
+ */
+
+#ifndef RESTER_H
+#define RESTER_H
+
+class Rester {
+public:
+    Rgba* buffer;
+    Rester(int width, int height);
+    virtual ~Rester();
+    void drawPointer(int x, int y, Rgba color, int pointSize = 1);
+    int size();
+    void clean();
+    bool setPixel(int x, int y, Rgba color);
+private:
+    int _width;
+    int _height;
+};
+
+#endif /* RESTER_H */
+

src/Rgba.cc

@@ -8,18 +8,65 @@
  * File:   Rgba.cc
  * Author: Blobt
  * 
- * Created on January 22, 2020, 9:14 PM
+ * Created on January 22, 2020, 11:36 PM
  */
 
+#include <bitset>
+#include <iostream>
 #include "Rgba.h"
 
-Rgba::Rgba() {
-    _r = 255;
-    _g = 255;
-    _b = 255;
-    _a = 255;
+using namespace std;
+
+Rgba::Rgba(unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
+    _r = r;
+    _g = g;
+    _b = b;
+    _a = a;
+}
+
+bool operator==(Rgba &left, Rgba &right) {
+    return left._a == right._a && left._b == right._b && left._g == right._g && left._r == right._r;
 }
 
-Rgba::~Rgba() {
+bool operator!=(Rgba &left, Rgba &right) {
+    return left._a != right._a || left._b != right._b || left._g != right._g || left._r != right._r;
+}
+
+Rgba::operator unsigned() {
+    unsigned int ret;
+
+    unsigned char* p = (unsigned char*)&ret;
+    p[0] = _r;
+    p[1] = _g;
+    p[2] = _b;
+    p[3] = _a;
+
+    //bitset<32> set = ret;
+    //cout << set << endl;
+    
+    return ret;
 }
 
+Rgba::operator int() {
+    int ret;
+
+    unsigned char* p = (unsigned char*)&ret;
+    p[0] = _r;
+    p[1] = _g;
+    p[2] = _b;
+    p[3] = _a;
+
+    return ret;
+}
+
+Rgba::operator long() {
+    long ret;
+
+    unsigned char* p = (unsigned char*)&ret ;
+    p[0] = _r;
+    p[1] = _g;
+    p[2] = _b;
+    p[3] = _a;
+
+    return ret;
+}

src/Rgba.h

@@ -8,7 +8,7 @@
  * File:   Rgba.h
  * Author: Blobt
  *
- * Created on January 22, 2020, 9:14 PM
+ * Created on January 22, 2020, 11:36 PM
  */
 
 #ifndef RGBA_H
@@ -16,9 +16,13 @@
 
 class Rgba {
 public:
-    Rgba();
-    ~Rgba();
-private:
+    Rgba(unsigned char r = 0, unsigned char g = 0, unsigned char b = 0, unsigned char a = 0);
+    friend bool operator==(Rgba &left, Rgba &right);
+    friend bool operator!=(Rgba &left, Rgba &righe);
+    operator unsigned();
+    operator int();
+    operator long();
+public:
     unsigned char _r;
     unsigned char _g;
     unsigned char _b;

src/common.h

@@ -0,0 +1,29 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+/* 
+ * File:   common.h
+ * Author: Blobt
+ *
+ * Created on October 5, 2019, 4:55 PM
+ */
+
+#ifndef COMMON_H
+#define COMMON_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define die(m) do { perror(m); exit(EXIT_FAILURE); } while(0)
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* COMMON_H */
+

src/gtktest.cc

@@ -2,6 +2,8 @@
 #include <cairo.h>
 #include <gtk/gtk.h>
 #include "Rgba.h"
+#include "Rester.h"
+#include "common.h"
 
 using namespace std;
 
@@ -9,12 +11,24 @@ using namespace std;
 gint height = 500;
 gint width = 500;
 
-unsigned char* makeBitmap() {
+Rester rester(width, height);
+
+unsigned char* makeBitmapRand() {
     unsigned char* data = new unsigned char[width * height * 4];
     for (int i = 0; i < width * height * 4; i++) {
         data[i] = rand() % 255;
     }
+    return data;
+}
+
+unsigned char* makeBitmap() {
+    rester.clean();
+    unsigned char* data = new unsigned char[width * height * 4];
+    for (int i = 0; i < 100; i++) {
+        rester.drawPointer(rand() % 500, rand() % 500, Rgba(255, 0, 0), 3);
+    }
 
+    memcpy(data, rester.buffer, rester.size());
     return data;
 }
 

src/tt.cc

@@ -0,0 +1,23 @@
+#include "Rgba.h"
+#include <stdio.h>
+#include <iostream>
+#include <bitset>
+#include <string.h>
+
+using namespace std;
+
+int main() {
+    Rgba x(255, 0, 0, 255);
+    Rgba y(0, 0, 255, 255);
+
+    unsigned char* z = new unsigned char[4];
+    
+    Rgba buffer[5][5];
+    
+    printf("%ld\n", sizeof(buffer));
+    //memcpy(z, x, sizeof(x));
+//    
+//    
+//    bitset<32> set = (int)z;
+//    cout << set << endl;
+}