add TextArea class

.vscode/settings.json

@@ -51,7 +51,8 @@
         "text_encoding": "cpp",
         "typeinfo": "cpp",
         "variant": "cpp",
-        "cassert": "cpp"
+        "cassert": "cpp",
+        "cstdarg": "cpp"
     },
     "Codegeex.RepoIndex": true
 }

.vscode/tasks.json

@@ -3,7 +3,7 @@
         {
             "type": "cppbuild",
             "label": "C/C++: g++.exe 生成活动文件",
-            "command": "c:\\mingw64\\bin\\g++.exe",
+            "command": "e:\\mingw64\\bin\\g++.exe",
             "args": [
                 "-fdiagnostics-color=always",
                 "-g",
@@ -12,7 +12,7 @@
                 "${fileDirname}\\${fileBasenameNoExtension}.exe"
             ],
             "options": {
-                "cwd": "c:\\mingw64\\bin"
+                "cwd": "e:\\mingw64\\bin"
             },
             "problemMatcher": [
                 "$gcc"

components/TextArea.h

@@ -4,17 +4,21 @@
 #include "BaseComponent.h"
 #include <windows.h>
 #include <vector>
+#include <conio.h>
 #include "../utils/RichText.h"
 
 class TextArea : public BaseComponent {
 private:
     RichText text;
-    int viewLeft = 0, viewTop = 0; // 视图左上角坐标
+    int viewLeft = 0, viewTop = 0;
+    std::vector<RichText> lines;
+    int maxLineWidth = 0;
+    RichText title;
 
     int findnth(std::string str, std::string target, int n){
         if(n == 0) return -1;
         int count = 0;
-    unsigned int begin=0;
+        size_t begin = 0;
         while((begin = str.find(target, begin)) != std::string::npos){
             count++;
             begin += target.length();
@@ -27,106 +31,154 @@ private:
 
 
 public:
-    TextArea(int top, int left, int width, int height) : BaseComponent(top, left, width, height){
-        text = RichText();
-    }
-    TextArea(int top, int left, int width, int height, const RichText& text) : BaseComponent(top, left, width, height){
-        this->text = text;
-    }
-    ~TextArea() override {}
-
     void setText(const RichText& text) {
         this->text = text;
+
+        lines.clear();
+        RichText line;
+        maxLineWidth = 0;
+        for(auto part : text.getParts()) {
+            if(part.text.find('\n') == std::string::npos) {
+                line += part;
+                // printf("Add: %s\n", part.text.c_str());
+            } else {
+                size_t begin = 0;
+                while((begin = part.text.find('\n', begin)) != std::string::npos) {
+                    line += StringPart(part.text.substr(0, begin), part.color);
+                    // printf("Add: %s\n", part.text.substr(0, begin).c_str());
+                    lines.push_back(line);
+                    if(maxLineWidth < line.length()) {
+                        maxLineWidth = line.length();
+                    }
+                    // printf("Push: %s\n", line.plainText().c_str());
+                    line = RichText();
+                    part.text = part.text.substr(begin + 1);
+                    // printf("Rest: %s\n", part.text.c_str());
+                }
+                line += part;
+                // printf("Add: %s\n", part.text.c_str());
+            }
+        }
+        if(line.length() > 0) {
+            lines.push_back(line);
+            if(maxLineWidth < line.length()) {
+                maxLineWidth = line.length();
+            }
+        }
     }
 
     RichText getText() {
         return text;
     }
 
+    TextArea(int top, int left, int width, int height) : BaseComponent(top, left, width, height){
+        setText(RichText());
+    }
+    TextArea(int top, int left, int width, int height, const RichText& text) : BaseComponent(top, left, width, height){
+        setText(text);
+    }
+    ~TextArea() override {}
+
     void draw() override {
-        //使用渲染边框，超出屏幕边缘的区域不渲染
         HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
         //获得缓冲区信息
         CONSOLE_SCREEN_BUFFER_INFO csbi;
         GetConsoleScreenBufferInfo(hConsole, &csbi);
-        //绘制边框到缓冲区
+        //清空区域
         for(int i = 0; i < height && top + i < csbi.dwSize.Y; i++) {
+            for(int j = 0; j < width && left + j < csbi.dwSize.X; j++) {
+                SetConsoleCursorPosition(hConsole, {static_cast<short>(left + j), static_cast<short>(top + i)});
+                printf(" ");
+            }
+        }
+        //绘制边框到缓冲区
+        for(int i = 1; i < height - 1 && top + i < csbi.dwSize.Y - 1; i++) {
             if(left >= 0) {
                 SetConsoleCursorPosition(hConsole, {static_cast<short>(left - 1), static_cast<short>(top + i - 1)});
-                printf("|");
+                putchar('|');
             }
             if(left + width - 1 < csbi.dwSize.X) {
                 SetConsoleCursorPosition(hConsole, {static_cast<short>(left + width - 2), static_cast<short>(top + i - 1)});
-                printf("|");
+                putchar('|');
             }
         }
         for(int i = 0; i < width && left + i < csbi.dwSize.X; i++) {
             if(top >= 0) {
                 SetConsoleCursorPosition(hConsole, {static_cast<short>(left + i - 1), static_cast<short>(top - 1)});
-                printf("-");
+                putchar('-');
             }
             if(top + height - 1 < csbi.dwSize.Y) {
                 SetConsoleCursorPosition(hConsole, {static_cast<short>(left + i - 1), static_cast<short>(top + height - 2)});
-                printf("-");
+                putchar('-');
             }
         }
-        //绘制文本到缓冲区，保证不超出边框
-        // int textWidth = 0, i = 0;
-        // while(textWidth <= width - 2 && left + textWidth + 2 < csbi.dwSize.X && i < text.size()) {
-        //     auto part = text.getParts()[i];
-        //     SetConsoleCursorPosition(hConsole, {static_cast<short>(left + textWidth), static_cast<short>(top)});
-        //     SetConsoleTextAttribute(hConsole, BackgroundColorToWinColor(getBackColor(part.color)) | FrontColorToWinColor(getFrontColor(part.color)));
-        //     if(left + textWidth + part.text.length() + 2 < csbi.dwSize.X && textWidth + part.text.length() <= width - 2) {
-        //         printf("%s", part.text.c_str());
-        //     } else {
-        //         printf("%s", part.text.substr(0, std::min(csbi.dwSize.X - left - textWidth - 2, width - 2 - textWidth)).c_str());
-        //     }
-        //     textWidth += text.getParts()[i].text.length();
-        //     i++;
-        // }
         
-        // 根据换行预处理文本
+        //绘制标题
-        std::vector<RichText> lines;
+        SetConsoleCursorPosition(hConsole, {static_cast<short>(left + 1), static_cast<short>(top - 1)});
-        RichText line;
+        for(auto part : title.getParts()) {
-        for(auto part : text.getParts()) {
+            SetConsoleTextAttribute(hConsole, BackgroundColorToWinColor(getBackColor(part.color)) | FrontColorToWinColor(getFrontColor(part.color)));
-            if(part.text.find('\n') == std::string::npos) {
+            printf("%s", part.text.c_str());
-                line += part;
-            } else {
-                unsigned int begin = 0;
-                while((begin = part.text.find('\n', begin)) != std::string::npos) {
-                    line += StringPart(part.text.substr(0, begin), part.color);
-                    lines.push_back(line);
-                    line = RichText();
-                    part.text = part.text.substr(begin + 1);
-                }
-                line += part;
-            }
         }
 
         for(int i = viewTop; i < viewTop + height - 2 && i < lines.size(); i++) {
-            line = lines[i];
+            RichText drawTarget = lines[i].substr(viewLeft, std::min(width - 2, csbi.dwSize.X - left - 2));
-            RichText drawTarget = line.substr(viewLeft, width - 2);
+            SetConsoleCursorPosition(hConsole, {static_cast<short>(left), static_cast<short>(top + i - viewTop)});
-            int textWidth = 0, ite = 0;
+            for(auto part : drawTarget.getParts()) {
-            while(textWidth <= width - 2 && left + textWidth + 2 < csbi.dwSize.X && ite < text.size()) {
-                auto part = line.getParts()[i];
-                SetConsoleCursorPosition(hConsole, {static_cast<short>(left + textWidth), static_cast<short>(top)});
                 SetConsoleTextAttribute(hConsole, BackgroundColorToWinColor(getBackColor(part.color)) | FrontColorToWinColor(getFrontColor(part.color)));
-                if(left + textWidth + part.text.length() + 2 < csbi.dwSize.X && textWidth + part.text.length() <= width - 2) {
                 printf("%s", part.text.c_str());
-                } else {
-                    printf("%s", part.text.substr(0, std::min(csbi.dwSize.X - left - textWidth - 2, width - 2 - textWidth)).c_str());
-                }
-                textWidth += part.text.length();
-                ite++;
             }
         }
 
         SetConsoleTextAttribute(hConsole, BackgroundColorToWinColor(COLOR_BLACK) | FrontColorToWinColor(COLOR_WHITE));
     }
 
+    void setViewTop(int top) {
+        this->viewTop = top;
+    }
+
+    int getViewTop() {
+        return this->viewTop;
+    }
+
+    void setViewLeft(int left) {
+        this->viewLeft = left;
+    }
+
+    int getViewLeft() {
+        return this->viewLeft;
+    }
+
+    void moveLeft() {
+        if(viewLeft > 0) {
+            viewLeft--;
+        }
+    }
+
+    void moveRight() {
+        if(viewLeft < maxLineWidth - width + 2) {
+            viewLeft++;
+        }
+    }
+
+    void moveUp() {
+        if(viewTop > 0) {
+            viewTop--;
+        }
+    }
+
+    void moveDown() {
+        if(viewTop < lines.size() - height + 2) {
+            viewTop++;
+        }
+    }
+
     void onKeyPress(int key) override {
         //不处理按键
     }
+
+    void setTitle(const RichText& title) {
+        this->title = title;
+    }
 };
 
 #endif

components/TextArea_test.cpp

@@ -1,23 +1,79 @@
 #include "BaseComponent.h"
 #include "TextArea.h"
 #include "../utils/RichText.h"
+#include <conio.h>
 
 int main() {
     RichText richText;
     richText = "Hello, World";
-    richText += StringPart(" with colors!", COLOR_RED);
+    richText += StringPart(" with colors!\n", COLOR_RED);
-    richText += " And more text.";
+    richText += "And more text.\n";
     richText += StringPart("And more more more text.", COLOR_GREEN);
-    richText += " And more more more more more text.";
+    richText += " And more more more more more text.\n";
     richText += StringPart("And more more more more more more text.", COLOR_BLUE);
-    richText += " And more more more more more more more text.";
+    richText += " And more more more more more more more text.\n";
-    richText += StringPart(" And more more more more more more more more text.", COLOR_YELLOW);
+    richText += StringPart("And more more more more more more more more text.\n", COLOR_YELLOW);
-    richText += " And more more more more more more more more more text.";
+    richText += "And more more more more more more more more more text.\n";
-    richText += StringPart(" And more more more more more more more more more more text.", COLOR_CYAN);
+    richText += StringPart("And more more more more more more more more more more text.\n", COLOR_CYAN);
 
-    TextArea textArea(3, 3, 40, 5, richText);
+    TextArea textArea(3, 3, 64, 7, richText);
+
+    // 创建后台缓冲区
+    HANDLE hBackBuffer = CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE, 0, NULL, CONSOLE_TEXTMODE_BUFFER, NULL);
+    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
+
+    // 清空后台缓冲区
+    CONSOLE_SCREEN_BUFFER_INFO csbi;
+    GetConsoleScreenBufferInfo(hConsole, &csbi);
+    DWORD dwBytesWritten;
+    FillConsoleOutputCharacter(hBackBuffer, ' ', csbi.dwSize.X * csbi.dwSize.Y, {0, 0}, &dwBytesWritten);
+    FillConsoleOutputAttribute(hBackBuffer, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, {0, 0}, &dwBytesWritten);
+    CONSOLE_CURSOR_INFO cci;
+    cci.bVisible = false;
+    cci.dwSize = 1;
+    SetConsoleCursorInfo(hBackBuffer, &cci);
+    SetConsoleCursorInfo(hConsole, &cci);
+
+    textArea.setTitle(RichText("TextArea Demo", COLOR_RED));
     textArea.draw();
 
-    printf("\n");
+    while(true) {
+        if (_kbhit()) {SetConsoleActiveScreenBuffer(hBackBuffer);
+            char opt = _getch();
+            textArea.setText(richText + StringPart("Last Key: " + std::to_string(opt), COLOR_CYAN));
+            switch(opt) {
+                case 72:
+                    textArea.moveUp();
+                    break;
+                case 80:
+                    textArea.moveDown();
+                    break;
+                case 75:
+                    textArea.moveLeft();
+                    break;
+                case 77:
+                    textArea.moveRight();
+                    break;
+                case 'q':
+                    SetConsoleActiveScreenBuffer(hConsole);
+                    CloseHandle(hBackBuffer);
+                    return 0;
+            }
+            
+            
+
+            // 清空后台缓冲区
+            FillConsoleOutputCharacter(hBackBuffer, ' ', csbi.dwSize.X * csbi.dwSize.Y, {0, 0}, &dwBytesWritten);
+            FillConsoleOutputAttribute(hBackBuffer, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, {0, 0}, &dwBytesWritten);
+
+            // 在后台缓冲区中绘制
+            textArea.draw();
+
+            // 切换到后台缓冲区，显示绘制的内容
+            SetConsoleActiveScreenBuffer(hConsole);
+        }
+        Sleep(1);
+    }
+
     return 0;
 }

components/TextLine.h

@@ -55,18 +55,11 @@ public:
             }
         }
         //绘制文本到缓冲区，保证不超出边框
-        int textWidth = 0, i = 0;
+        RichText drawTarget = text.substr(0, std::min(width - 2, csbi.dwSize.X - left - 2));
-        while(textWidth <= width - 2 && left + textWidth + 2 < csbi.dwSize.X && i < text.size()) {
+        SetConsoleCursorPosition(hConsole, {static_cast<short>(left), static_cast<short>(top)});
-            auto part = text.getParts()[i];
+        for(auto part : drawTarget.getParts()) {
-            SetConsoleCursorPosition(hConsole, {static_cast<short>(left + textWidth), static_cast<short>(top)});
             SetConsoleTextAttribute(hConsole, BackgroundColorToWinColor(getBackColor(part.color)) | FrontColorToWinColor(getFrontColor(part.color)));
-            if(left + textWidth + part.text.length() + 2 < csbi.dwSize.X && textWidth + part.text.length() <= width - 2) {
             printf("%s", part.text.c_str());
-            } else {
-                printf("%s", part.text.substr(0, std::min(csbi.dwSize.X - left - textWidth - 2, width - 2 - textWidth)).c_str());
-            }
-            textWidth += part.text.length();
-            i++;
         }
 
         SetConsoleTextAttribute(hConsole, BackgroundColorToWinColor(COLOR_BLACK) | FrontColorToWinColor(COLOR_WHITE));

utils/RichText.h

@@ -43,6 +43,18 @@ public:
     RichText() {
         parts.push_back({""});
     }
+    // 构造函数，初始化为一段指定文本和颜色的文本
+    RichText(const std::string& text, const MColor& color) {
+        parts.push_back({text, color});
+    }
+    // 构造函数，初始化为一段指定文本的文本
+    RichText(const std::string& text) {
+        parts.push_back({text});
+    }
+    // 构造函数，初始化为一段指定文本和颜色的文本
+    RichText(const StringPart& part) {
+        parts.push_back(part);
+    }
 
     // 重载运算符=
     RichText& operator=(const RichText& other) {