新增了Cursor

components/BaseComponent.h

@@ -44,7 +44,7 @@ public:
         return focusStatus;
     }
 
-    void setPosition(int top, int left) {
+    void setPosition(int left, int top) {
         this->top = top;
         this->left = left;
     }

components/Cursor.h

@@ -0,0 +1,98 @@
+#ifndef CURSOR_H
+#define CURSOR_H
+
+#include "BaseComponent.h"
+#include "../utils/Color.h"
+#include <windows.h>
+#include <iostream>
+
+class Cursor : public BaseComponent {
+private:
+    bool visibility_;
+    const int cursorAttributes_ = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY;
+    int lastAttributes_;
+    bool posHasChanged_ = true;
+    int maxLeft_, maxTop_;
+    COORD lastPos_ = {0, 0};
+
+public:
+    Cursor() : BaseComponent(1, 1, 1, 1) { visibility_ = true; }
+    Cursor(int x, int y) : BaseComponent(x, y, 1, 1) { visibility_ = true; };
+    Cursor(int x, int y, bool visibility) : BaseComponent(x, y, 1, 1) { visibility_ = visibility; }
+    ~Cursor() override = default;
+
+    void draw() override {
+        if (!visibility_) return;
+        // ReadConsoleOutput
+        HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
+        COORD bufferSize = {static_cast<short>(1), static_cast<short>(1)};
+        COORD bufferPos = {0, 0};
+        if(posHasChanged_) {
+            SMALL_RECT oldReat = {static_cast<short>(lastPos_.X - 1), static_cast<short>(lastPos_.Y - 1), static_cast<short>(lastPos_.X), static_cast<short>(lastPos_.Y)};
+            CHAR_INFO buffer[1];
+            if(ReadConsoleOutput(hConsole, buffer, bufferSize, bufferPos, &oldReat) == 0) {
+                // std::cout << GetLastError() << std::endl;
+            }
+            buffer[0].Attributes = lastAttributes_;
+            if(WriteConsoleOutput(hConsole, buffer, bufferSize, bufferPos, &oldReat) == 0) {
+                // std::cout << GetLastError() << std::endl;
+            }
+        }
+        SMALL_RECT rect = {static_cast<short>(left - 1), static_cast<short>(top - 1), static_cast<short>(left), static_cast<short>(top)};
+        CHAR_INFO buffer[1];
+        if(ReadConsoleOutput(hConsole, buffer, bufferSize, bufferPos, &rect) == 0) {
+            // std::cout << GetLastError() << std::endl;
+        }
+        if(posHasChanged_) {
+            lastAttributes_ = buffer[0].Attributes;
+        }
+        buffer[0].Attributes = cursorAttributes_;
+        if(WriteConsoleOutput(hConsole, buffer, bufferSize, bufferPos, &rect) == 0) {
+            // std::cout << GetLastError() << std::endl;
+        }
+        posHasChanged_ = false;
+    }
+
+    void setPosition(int x, int y) {
+        posHasChanged_ = true;
+        lastPos_ = {static_cast<short>(left), static_cast<short>(top)};
+        BaseComponent::setPosition(x, y);
+    }
+
+    void setBounds(int maxLeft, int maxTop) {
+        maxLeft_ = maxLeft;
+        maxTop_ = maxTop;
+    }
+
+    void moveUp() {
+        if(top > 1) {
+            setPosition(left, top - 1);
+        }
+    }
+
+    void moveDown() {
+        if(top < maxTop_) {
+            setPosition(left, top + 1);
+        }
+    }
+
+    void moveLeft() {
+        if(left > 1) {
+            setPosition(left - 1, top);
+        }
+    }
+
+    void moveRight() {
+        if(left < maxLeft_) {
+            setPosition(left + 1, top);
+        }
+    }
+
+    void onKeyPress(int key) override { return; }
+
+    void setVisibility(bool visibility) { visibility_ = visibility; }
+
+    bool isVisible() { return visibility_; }
+};
+
+#endif

components/Cursor_test.cpp

@@ -0,0 +1,51 @@
+#include "Cursor.h"
+#include <iostream>
+#include <cassert>
+#include <conio.h>
+
+int main() {
+    for(int i = 0; i < 20; i++) {
+        for(int j = 0; j < 20; j++) {
+            std::cout << char('a' + j);
+        }
+        std::cout << std::endl;
+    }
+
+    // Test case 1: Cursor is created at the origin
+    Cursor cursor1;
+    cursor1.draw();
+    assert(cursor1.getLeft() == 1);
+    assert(cursor1.getTop() == 1);
+
+    // Test case 2: Cursor is moved to a positive coordinate
+    cursor1.setPosition(5, 10);
+    cursor1.draw();
+    assert(cursor1.getLeft() == 5);
+
+    cursor1.setBounds(20, 20);
+
+    while(true) {
+        if (_kbhit()) {
+            char opt = _getch();
+            switch(opt) {
+                case 72:
+                    cursor1.moveUp();
+                    break;
+                case 80:
+                    cursor1.moveDown();
+                    break;
+                case 75:
+                    cursor1.moveLeft();
+                    break;
+                case 77:
+                    cursor1.moveRight();
+                    break;
+                case 'q':
+                    return 0;
+            }
+            cursor1.draw();
+        }
+    }
+
+    return 0;
+}

components/Editor.h

@@ -0,0 +1,12 @@
+#ifndef EDITOR_H
+#define EDITOR_H
+
+#include "BaseComponent.h"
+#include "TextArea.h"
+
+class Editor : public BaseComponent {
+private:
+    TextArea* textArea;
+};
+
+#endif