6c268f28
 杨鑫
最新1
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shareMsg() {
this.showShareModal = true;
},
// 关闭分享拉起框
closeShareModal() {
this.showShareModal = false;
},
// 生成海报
generatePoster() {
this.closeShareModal()
this.$http.sendRequest(`/cerePromotion/getSharePic/${this.tableData.id}`, 'GET', '', 1).then(res => {
this.posterUrl = this.imgurl + res.data.data
this.imgUrls.push(this.imgurl + res.data.data)
this.mergeImages()
this.showPosterMask = true;
})
// setTimeout(() => {
// this.posterUrl = 'https://dummyimage.com/800x600/ff0000/ffffff'; // 替换为真实的海报图片地址
// this.showPosterMask = true;
// }, 1000);
},
getImageInfo(src) {
return new Promise((resolve, reject) => {
wx.getImageInfo({
src,
success: (res) => resolve(res),
fail: (res) => reject(res)
})
});
},
mergeImages(imgs) {
const imgUrls = this.imgUrls
const imgPromises = imgUrls.map((url) => {
return new Promise((resolve, reject) => {
uni.getImageInfo({
src: url,
success: (res) => {
// 直接传递图片路径，无需创建 Image 对象
resolve({
path: res.path,
width: res.width,
height: res.height
});
},
fail: (err) => {
console.error('获取图片信息失败:', err);
reject(err);
}
});
});
});
Promise.all(imgPromises)
.then((imgInfos) => {
let maxHeight = 400;
let totalWidth = 300;
let scaledWidth = 0
let scaledHeight = 0
imgInfos.forEach((imgInfo, index) => {
if (index === 0) {
const imgInfo = imgInfos[index];
const imgRatio = imgInfo.width / imgInfo.height; // 图片的宽高比例
const canvasRatio = totalWidth / maxHeight; // 画布的宽高比例
if (imgRatio > canvasRatio) {
// 图片更宽，按宽度缩放
scaledWidth = totalWidth;
scaledHeight = maxHeight / imgRatio;
} else {
// 图片更高，按高度缩放
scaledHeight = maxHeight;
scaledWidth = totalWidth * imgRatio;
}
// 设置画布的宽度和高度为缩放后的图片宽度和高度
this.canvasWidth = scaledWidth;
this.canvasHeight = scaledHeight;
}
maxHeight = Math.max(maxHeight, imgInfo.height);
totalWidth += imgInfo.width;
});
if (totalWidth === 0 || maxHeight === 0) {
console.error('计算得到的画布尺寸为0');
return;
}
const ctx = uni.createCanvasContext('mergeCanvas');
uni.getSystemInfo({
success: (systemInfo) => {
// 处理第一张图片，按窗口宽高比例缩放
const firstImgInfo = imgInfos[0];
// 清空画布并设置缩放
ctx.setFillStyle('white');
ctx.fillRect(0, 0, this.canvasWidth, this.canvasHeight);
// 绘制第一张图片作为背景
ctx.drawImage(
firstImgInfo.path,
0,
0,
this.canvasWidth,
this.canvasHeight,
);
const secondImgInfo = imgInfos[1];
// 绘制第二张图片在第一张图片上层右下角
ctx.drawImage(
secondImgInfo.path,
this.canvasWidth-100,
this.canvasHeight-100,
100,
100
);
setTimeout(() => {
// 绘制完成后生成图片
ctx.draw(false, () => {
uni.canvasToTempFilePath({
canvasId: 'mergeCanvas',
success: (res) => {
console.log('生成临时文件成功，路径:', res
.tempFilePath);
this.mergedImageSrc = res
.tempFilePath;
},
fail: (err) => {
console.error('生成临时文件失败', err);
}
});
});
}, 1000)
},
fail: (err) => {
console.error('获取设备信息失败', err);
}
});
})
.catch((err) => {
console.error('获取图片信息失败或图片加载失败', err);
})
},
// 关闭海报遮罩层
closePosterMask() {
this.showPosterMask = false;
this.mergedImageSrc = '';
},
onShareAppMessage() {
return {
title: this.tableData.schemeTitle,
imageUrl: this.imgurl + this.tableData.coverImage,
path: `/pagesA/projectManagement/projectDetails?id=${this.tableData.id}`,
success(res) {
uni.showToast({
icon: 'none',
title: '分享成功'
})
},
fail(err) {
console.log('分享失败', err);
}
};
},
saveImage() {
// 获取图片信息
uni.getImageInfo({
src: this.mergedImageSrc,
success: (res) => {
const tempFilePath = res.path
// 检查保存相册权限
uni.getSetting({
success: (settingRes) => {
if (!settingRes.authSetting['scope.writePhotosAlbum']) {
// 没有权限，请求权限
uni.authorize({
scope: 'scope.writePhotosAlbum',
success: () => {
// 授权成功，保存图片
this.saveImageToAlbum(tempFilePath);
},
fail: () => {
// 授权失败，提示用户手动开启权限
uni.showModal({
title: '提示',
content: '请在设置中开启保存相册权限',
success: (modalRes) => {
if (modalRes.confirm) {
uni.openSetting();
}
}
});
}
});
} else {
// 已有权限，保存图片
this.saveImageToAlbum(tempFilePath);
}
}
});
},
fail: (err) => {
console.error('获取图片信息失败:', err);
uni.showToast({
title: '获取图片信息失败',
icon: 'none'
});
}
});
},
saveImageToAlbum(tempFilePath) {
uni.saveImageToPhotosAlbum({
filePath: tempFilePath,
success: () => {
uni.showToast({
title: '图片保存成功',
icon: 'success'
});
},
fail: (err) => {
console.error('保存图片到相册失败:', err);
uni.showToast({
title: '保存图片到相册失败',
icon: 'none'
});
}
});
},
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|
6c268f28
杨鑫
最新1
|
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.share-mask {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0, 0, 0, 0.3);
z-index: 99;
}
.share-modal {
position: fixed;
bottom: -200px;
/* 初始位置在屏幕外 */
left: 0;
right: 0;
background-color: #fff;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
// padding: 10px;
z-index: 100;
transition: bottom 0.3s ease;
/* 添加过渡效果 */
}
.share-modal-animate {
bottom: 0;
/* 动画结束位置 */
}
.share-option {
padding: 15px;
text-align: center;
border-bottom: 1px solid #eee;
background-color: #fff;
}
.poster-mask {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0, 0, 0, 0.5);
display: flex;
justify-content: center;
align-items: center;
z-index: 101;
}
.poster-container {
position: relative;
background-color: #fff;
padding: 10px;
border-radius: 10px;
// height: 400px;
width: 90%;
}
.close-btn {
position: absolute;
top: 10px;
right: 10px;
font-size: 20px;
cursor: pointer;
}
button {
padding: 0;
margin: 0;
border: 1px solid transparent;
line-height: 1;
font-size: 14px;
}
button::after {
border: none;
}
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