96 lines
2.8 KiB
C++
96 lines
2.8 KiB
C++
//
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// Created by my on 2019/11/16.
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//
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#include "TextRenderer.h"
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TextRenderer::TextRenderer(vkvm::Color backgroundColor, vkvm::Color fontColor, Font font)
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: backgroundColor(backgroundColor), fontColor(fontColor), font(font) {
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windowWidth = vkvm::getWidth();
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fontWidth = font.width();
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fontHeight = font.height();
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}
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void TextRenderer::update(std::string newText) {
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int startX;
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int startY;
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int i;
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int fontNumbersInOneLine = windowWidth / fontWidth;
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bool** characterBitmap;
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std::cout << "get window's width from shared memery: (" << windowWidth << ")" << std::endl;
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for(i = 0; i < newText.size(); i++) {
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if(i > oldText.size() || oldText[i] != newText[i]) {
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startX = i % fontNumbersInOneLine * fontWidth;
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startY = i / fontNumbersInOneLine * fontHeight;
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characterBitmap = getCharacter(newText[i], font);
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fontProcessing(characterBitmap);
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translateToSharedMemory(characterBitmap, startX, startY);
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}
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}
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oldText = newText;
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}
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void TextRenderer::setOldText(std::string text) {
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}
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bool** TextRenderer::getCharacter(unsigned char character, Font font) {
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int fontHeight = font.height();
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int fontWidth = font.width();
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bool **bitmap_character;
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bitmap_character = (bool**)malloc(fontHeight * sizeof(bool*));
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for (int i = 0; i < fontHeight; i++) {
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bitmap_character[i] = (bool*)malloc(fontWidth * sizeof(bool));
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for (int j = 0; j < fontWidth; j++) {
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bitmap_character[i][j] = font.getPixel(character, j, i);
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}
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}
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return bitmap_character;
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}
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void TextRenderer::fontProcessing(bool **characterBitmap) {
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if(isBold()) {
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for (int i = fontHeight - 1; i >= 0; i--) {
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for (int j = fontWidth - 1; j >= 0; j--) {
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if (i != fontHeight - 1 && j != fontWidth - 1 && characterBitmap[i][j]) {
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characterBitmap[i + 1][j] = true;
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characterBitmap[i][j + 1] = true;
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}
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}
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}
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}
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if(isUnderline()) {
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for (int j = 0; j < fontWidth; j++)
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characterBitmap[fontHeight - 1][j] = true;
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}
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}
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bool TextRenderer::isBold() {
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return type & BOLD != 0;
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}
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bool TextRenderer::isUnderline() {
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return type & UNDERLINE != 0;
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}
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void TextRenderer::translateToSharedMemory(bool **characterBitmap, int startX, int startY) {
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int x, y;
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int currentX = startX;
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int currentY = startY;
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for(y = 0; y < fontHeight; y++) {
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for(x = 0; x < fontWidth; x++) {
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if(characterBitmap[y + startY][x + startX])
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setPixel(currentX, currentY, fontColor);
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else
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setPixel(currentX, currentY, backgroundColor);
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currentX++;
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}
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currentX = startX;
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currentY++;
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}
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} |