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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>倒转房屋线条</title>
- <style>
- .house {
- position: relative;
- width: 200px; /* 正方形的宽度 */
- height: 200px; /* 正方形的高度 */
- background-color: #f0f0f0; /* 正方形的颜色 */
- }
- .house::after {
- content: '';
- position: absolute;
- top: 100%; /* 从正方形底部开始 */
- left: 50%;
- transform: translateX(-50%);
- border-left: 100px solid transparent; /* 左边透明边 */
- border-right: 100px solid transparent; /* 右边透明边 */
- border-top: 100px solid #f0f0f0; /* 上边为倒立三角形的底边 */
- }
- </style>
- </head>
- <body>
- <div class="house">
- </div>
- </body>
- </html>
- <!--<!DOCTYPE html>-->
- <!--<html lang="en">-->
- <!--<head>-->
- <!-- <meta charset="UTF-8">-->
- <!-- <meta name="viewport" content="width=device-width, initial-scale=1.0">-->
- <!-- <title>Enhanced Button Selection</title>-->
- <!-- <style>-->
- <!-- canvas {-->
- <!-- border: 1px solid #000;-->
- <!-- display: block;-->
- <!-- margin: 0 auto;-->
- <!-- }-->
- <!-- </style>-->
- <!--</head>-->
- <!--<body>-->
- <!--<canvas id="buttonCanvas" width="480" height="360"></canvas>-->
- <!--<script>-->
- <!-- const canvas = document.getElementById('buttonCanvas');-->
- <!-- const ctx = canvas.getContext('2d');-->
- <!-- const buttonWidth = 100;-->
- <!-- const buttonHeight = 100;-->
- <!-- const padding = 10;-->
- <!-- const rows = 3;-->
- <!-- const cols = 4;-->
- <!-- const images = [-->
- <!-- 'https://via.placeholder.com/100/FF0000/FFFFFF?text=Red',-->
- <!-- 'https://via.placeholder.com/100/0000FF/FFFFFF?text=Blue',-->
- <!-- 'https://via.placeholder.com/100/00FF00/FFFFFF?text=Green',-->
- <!-- 'https://via.placeholder.com/100/FFFFFF/000000?text=White',-->
- <!-- 'https://via.placeholder.com/100/FFAA00/FFFFFF?text=Orange',-->
- <!-- 'https://via.placeholder.com/100/AAAAAA/FFFFFF?text=Gray',-->
- <!-- 'https://via.placeholder.com/100/FF00FF/FFFFFF?text=Magenta',-->
- <!-- 'https://via.placeholder.com/100/00FFFF/FFFFFF?text=Cyan',-->
- <!-- 'https://via.placeholder.com/100/FFFF00/FFFFFF?text=Yellow',-->
- <!-- 'https://via.placeholder.com/100/000000/FFFFFF?text=Black',-->
- <!-- 'https://via.placeholder.com/100/FF7777/FFFFFF?text=Pink',-->
- <!-- 'https://via.placeholder.com/100/7777FF/FFFFFF?text=Purple',-->
- <!-- ];-->
- <!-- let buttons = [];-->
- <!-- let selectedButtons = new Set();-->
- <!-- function loadImages(imageUrls, callback) {-->
- <!-- const loadedImages = [];-->
- <!-- let imagesToLoad = imageUrls.length;-->
- <!-- imageUrls.forEach((url, index) => {-->
- <!-- const img = new Image();-->
- <!-- img.src = url;-->
- <!-- img.onload = () => {-->
- <!-- loadedImages[index] = img;-->
- <!-- imagesToLoad--;-->
- <!-- if (imagesToLoad === 0) callback(loadedImages);-->
- <!-- };-->
- <!-- });-->
- <!-- }-->
- <!-- function createButtons(images) {-->
- <!-- let x, y;-->
- <!-- for (let row = 0; row < rows; row++) {-->
- <!-- for (let col = 0; col < cols; col++) {-->
- <!-- const index = row * cols + col;-->
- <!-- x = col * (buttonWidth + padding);-->
- <!-- y = row * (buttonHeight + padding);-->
- <!-- buttons.push({ x, y, width: buttonWidth, height: buttonHeight, image: images[index], id: index });-->
- <!-- }-->
- <!-- }-->
- <!-- }-->
- <!-- function drawButtons() {-->
- <!-- ctx.clearRect(0, 0, canvas.width, canvas.height);-->
- <!-- buttons.forEach(button => {-->
- <!-- // 绘制按钮图片-->
- <!-- ctx.drawImage(button.image, button.x, button.y, button.width, button.height);-->
- <!-- if (selectedButtons.has(button.id)) {-->
- <!-- // 绘制半透明灰色遮罩-->
- <!-- ctx.fillStyle = 'rgba(50, 50, 50, 0.5)';-->
- <!-- ctx.fillRect(button.x, button.y, button.width, button.height);-->
- <!-- // 绘制白色对勾图标-->
- <!-- ctx.fillStyle = 'white';-->
- <!-- ctx.font = '20px Arial';-->
- <!-- ctx.textAlign = 'center';-->
- <!-- ctx.textBaseline = 'middle';-->
- <!-- ctx.fillText('✔', button.x + button.width / 2, button.y + button.height / 2);-->
- <!-- // 添加边框-->
- <!-- ctx.strokeStyle = 'black';-->
- <!-- ctx.lineWidth = 5;-->
- <!-- ctx.strokeRect(button.x, button.y, button.width, button.height);-->
- <!-- }-->
- <!-- });-->
- <!-- }-->
- <!-- function handleCanvasClick(event) {-->
- <!-- const rect = canvas.getBoundingClientRect();-->
- <!-- const mouseX = event.clientX - rect.left;-->
- <!-- const mouseY = event.clientY - rect.top;-->
- <!-- buttons.forEach(button => {-->
- <!-- if (-->
- <!-- mouseX >= button.x &&-->
- <!-- mouseX <= button.x + button.width &&-->
- <!-- mouseY >= button.y &&-->
- <!-- mouseY <= button.y + button.height-->
- <!-- ) {-->
- <!-- if (selectedButtons.has(button.id)) {-->
- <!-- selectedButtons.delete(button.id); // 取消选中-->
- <!-- } else {-->
- <!-- selectedButtons.add(button.id); // 选中按钮-->
- <!-- }-->
- <!-- drawButtons();-->
- <!-- }-->
- <!-- });-->
- <!-- }-->
- <!-- canvas.addEventListener('click', handleCanvasClick);-->
- <!-- loadImages(images, loadedImages => {-->
- <!-- createButtons(loadedImages);-->
- <!-- drawButtons();-->
- <!-- });-->
- <!--</script>-->
- <!--</body>-->
- <!--</html>-->
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