129 lines
3.8 KiB
C++
129 lines
3.8 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(int windowWidth, int windowHeight, vkvm::Color backgroundColor, vkvm::Color fontColor, Font font)
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: backgroundColor(backgroundColor), fontColor(fontColor), font(font) {
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this-> windowWidth = windowWidth;
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this-> windowHeight = windowHeight;
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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 = 0;
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int startY = 0;
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int i;
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int fontNumbersInOneLine = windowWidth / (fontWidth + left_margin);
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std::vector<std::vector<bool>> characterBitmap;
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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 + left_margin);
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startY = (i / fontNumbersInOneLine) * (fontHeight + bottom_margin);
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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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setOldText(newText);
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}
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void TextRenderer::clear() {
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int x, y;
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for(y = 0; y < windowHeight; y++) {
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for(x = 0; x < windowWidth; x++) {
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vkvm::setPixel(x, y, backgroundColor);
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}
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}
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}
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void TextRenderer::setOldText(std::string text) {
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oldText = text;
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}
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std::vector<std::vector<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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std::vector<std::vector<bool>> bitmap_character;
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// bitmap_character = (bool**)malloc(fontHeight * sizeof(bool*));
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bitmap_character.resize(fontHeight);
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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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bitmap_character[i].resize(fontWidth);
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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(std::vector<std::vector<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(std::vector<std::vector<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][x]) {
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vkvm::setPixel(currentX, currentY, fontColor);
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}
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else {
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vkvm::setPixel(currentX, currentY, backgroundColor);
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}
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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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for(x = 0; x < left_margin; x++) {
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for(y = 0; y < fontHeight; y++) {
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vkvm::setPixel(startX + fontWidth + x, startY + y, backgroundColor);
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}
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}
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for(y = 0; y < bottom_margin; y++) {
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for(x = 0; x < fontWidth + left_margin; x++) {
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vkvm::setPixel(startX + x, startY + fontHeight + y, backgroundColor);
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}
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}
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}
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void TextRenderer::setLeftMargin(int margin) {
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left_margin = margin;
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}
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void TextRenderer::setBottomMargin(int margin) {
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bottom_margin = margin;
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}
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