优化: 图片高度宽度显示优化

im-platform/src/main/java/com/bx/implatform/service/impl/FileServiceImpl.java

@@ -25,6 +25,9 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.DigestUtils;
 import org.springframework.web.multipart.MultipartFile;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.util.Date;
 import java.util.Objects;
@@ -101,6 +104,10 @@ public class FileServiceImpl extends ServiceImpl<FileInfoMapper, FileInfo> imple
                 throw new GlobalException(ResultCode.PROGRAM_ERROR, "图片格式不合法");
             }
             UploadImageVO vo = new UploadImageVO();
+            // 获取图片长度和宽度
+            BufferedImage bufferedImage =  ImageIO.read(file.getInputStream());
+            vo.setWidth(bufferedImage.getWidth());
+            vo.setHeight(bufferedImage.getHeight());
             // 如果文件已存在，直接复用
             String md5 = DigestUtils.md5DigestAsHex(file.getInputStream());
             FileInfo fileInfo = findByMd5(md5, FileType.IMAGE.code());

im-platform/src/main/java/com/bx/implatform/vo/UploadImageVO.java

@@ -12,4 +12,10 @@ public class UploadImageVO {
 
     @Schema(description = "缩略图")
     private String thumbUrl;
+
+    @Schema(description = "图片宽度")
+    private int width;
+
+    @Schema(description = "图片高度")
+    private int height;
 }

im-uniapp/components/chat-message-item/chat-message-item.vue

@@ -27,9 +27,8 @@
 						<view class="message-image" v-else-if="msgInfo.type == $enums.MESSAGE_TYPE.IMAGE">
 							<long-press-menu :items="menuItems" @select="onSelectMenu">
 								<view class="image-box">
-									<image class="send-image" mode="heightFix"
+									<image class="send-image" :style="imageStyle" mode="aspectFill"
-										:src="JSON.parse(msgInfo.content).thumbUrl" lazy-load="true"
+										:src="contentData.thumbUrl" lazy-load="true" @click.stop="onShowFullImage()">
-										@click.stop="onShowFullImage()">
 									</image>
 									<loading v-if="sending"></loading>
 								</view>
@@ -39,8 +38,8 @@
 							<long-press-menu :items="menuItems" @select="onSelectMenu">
 								<view class="file-box">
 									<view class="file-info">
-										<uni-link class="file-name" :text="data.name" showUnderLine="true"
+										<uni-link class="file-name" :text="contentData.name" showUnderLine="true"
-											color="#007BFF" :href="data.url"></uni-link>
+											color="#007BFF" :href="contentData.url"></uni-link>
 										<view class="file-size">{{ fileSize }}</view>
 									</view>
 									<view class="file-icon iconfont icon-file"></view>
@@ -52,7 +51,7 @@
 							@select="onSelectMenu">
 							<view class="message-audio message-text" @click="onPlayAudio()">
 								<text class="iconfont icon-voice-play"></text>
-								<text class="chat-audio-text">{{ JSON.parse(msgInfo.content).duration + '"' }}</text>
+								<text class="chat-audio-text">{{ contentData.duration + '"' }}</text>
 								<text v-if="audioPlayState == 'PAUSE'" class="iconfont icon-play"></text>
 								<text v-if="audioPlayState == 'PLAYING'" class="iconfont icon-pause"></text>
 							</view>
@@ -128,7 +127,7 @@ export default {
 			// 初始化音频播放器
 			if (!this.innerAudioContext) {
 				this.innerAudioContext = uni.createInnerAudioContext();
-				let url = JSON.parse(this.msgInfo.content).url;
+				let url = this.contentData.url;
 				this.innerAudioContext.src = url;
 				this.innerAudioContext.onEnded((e) => {
 					console.log('停止')
@@ -159,7 +158,7 @@ export default {
 			this.menu.show = false;
 		},
 		onShowFullImage() {
-			let imageUrl = JSON.parse(this.msgInfo.content).originUrl;
+			let imageUrl = this.contentData.originUrl;
 			uni.previewImage({
 				urls: [imageUrl]
 			})
@@ -185,11 +184,11 @@ export default {
 		sendFail() {
 			return this.msgInfo.status == this.$enums.MESSAGE_STATUS.FAILED;
 		},
-		data() {
+		contentData() {
 			return JSON.parse(this.msgInfo.content)
 		},
 		fileSize() {
-			let size = this.data.size;
+			let size = this.contentData.size;
 			if (size > 1024 * 1024) {
 				return Math.round(size / 1024 / 1024) + "M";
 			}
@@ -244,6 +243,22 @@ export default {
 			let text = this.$str.html2Escape(this.msgInfo.content)
 			text = this.$url.replaceURLWithHTMLLinks(text, color)
 			return this.$emo.transform(text, 'emoji-normal')
+		},
+		imageStyle() {
+			console.log(uni.getSystemInfo())
+			let maxSize = uni.getSystemInfoSync().windowWidth * 0.6;
+			let minSize = uni.getSystemInfoSync().windowWidth * 0.2;
+			let width = this.contentData.width;
+			let height = this.contentData.height;
+			if (width && height) {
+				let ratio = Math.min(width, height) / Math.max(width, height);
+				let w = Math.max(width > height ? maxSize : ratio * maxSize, minSize);
+				let h = Math.max(width > height ? ratio * maxSize : maxSize, minSize);
+				return `width: ${w}px;height:${h}px;`
+			} else {
+				// 兼容历史版本，历史数据没有记录宽高
+				return `max-width: ${maxSize}px;min-width:100px;max-height: ${maxSize}px;min-height:100px;`
+			}
 		}
 	}
 }
@@ -348,11 +363,10 @@ export default {
 							position: relative;
 
 							.send-image {
-								min-width: 200rpx;
-								max-width: 420rpx;
-								height: 350rpx;
 								cursor: pointer;
-								border-radius: 4px;
+								border-radius: 10rpx;
+								background: $im-bg;
+								border: 6rpx solid $im-color-primary-light-5;
 							}
 						}
 

im-uniapp/pages/chat/chat-box.vue

@@ -453,6 +453,16 @@ export default {
 			file.chat = this.chat;
 			// 滚到最低部
 			this.scrollToBottom();
+			// 更新图片宽高
+			let chat = this.chat;
+			this.getImageSize(file).then(size => {
+				msgInfo = JSON.parse(JSON.stringify(msgInfo))
+				data.width = size.width;
+				data.height = size.height;
+				msgInfo.content = JSON.stringify(data)
+				this.chatStore.insertMessage(msgInfo, chat);
+				this.scrollToBottom();
+			})
 			return true;
 		},
 		onUploadImageSuccess(file, res) {
@@ -904,6 +914,19 @@ export default {
 			}
 			return message;
 		},
+		getImageSize(file) {
+			return new Promise((resolve) => {
+				uni.getImageInfo({
+					src: file.path,
+					success: (res) => {
+						resolve(res);
+					},
+					fail: (err) => {
+						console.error('获取图片信息失败', err);
+					}
+				});
+			});
+		},
 		generateId() {
 			// 生成临时id 
 			return String(new Date().getTime()) + String(Math.floor(Math.random() * 1000));

im-web/src/components/chat/ChatBox.vue

@@ -203,6 +203,15 @@ export default {
 			// 借助file对象保存
 			file.msgInfo = msgInfo;
 			file.chat = this.chat;
+			// 更新图片尺寸
+			let chat = this.chat;
+			this.getImageSize(file).then(size => {
+				data.width = size.width;
+				data.height = size.height;
+				msgInfo.content = JSON.stringify(data)
+				this.chatStore.insertMessage(msgInfo, chat);
+				this.scrollToBottom();
+			})
 		},
 		onFileSuccess(url, file) {
 			let data = {
@@ -681,6 +690,25 @@ export default {
 			}
 			return message;
 		},
+		getImageSize(file) {
+			return new Promise((resolve, reject) => {
+				const reader = new FileReader();
+				reader.onload = function (event) {
+					const img = new Image();
+					img.onload = function () {
+						resolve({ width: img.width, height: img.height });
+					};
+					img.onerror = function () {
+						reject(new Error('无法加载图片'));
+					};
+					img.src = event.target.result;
+				};
+				reader.onerror = function () {
+					reject(new Error('无法读取文件'));
+				};
+				reader.readAsDataURL(file);
+			});
+		},
 		generateId() {
 			// 生成临时id
 			return String(new Date().getTime()) + String(Math.floor(Math.random() * 1000));

im-web/src/components/chat/ChatMessageItem.vue

@@ -21,18 +21,19 @@
 				<div class="message-bottom" @contextmenu.prevent="showRightMenu($event)">
 					<div ref="chatMsgBox" class="message-content-wrapper">
 						<span class="message-text" v-if="isTextMessage" v-html="htmlText"></span>
-						<div class="message-image" v-else-if="msgInfo.type == $enums.MESSAGE_TYPE.IMAGE">
+						<div class="message-image" v-else-if="msgInfo.type == $enums.MESSAGE_TYPE.IMAGE"
-							<div class="img-load-box" v-loading="sending" element-loading-text="发送中.."
+							@click="showFullImageBox()">
+							<div v-loading="sending" element-loading-text="发送中.."
 								element-loading-background="rgba(0, 0, 0, 0.4)">
-								<img class="send-image" :src="JSON.parse(msgInfo.content).thumbUrl"
+								<img :style="imageStyle" :src="contentData.thumbUrl" loading="lazy" />
-									@click="showFullImageBox()" loading="lazy" />
 							</div>
 						</div>
 						<div class="message-file" v-else-if="msgInfo.type == $enums.MESSAGE_TYPE.FILE">
 							<div class="chat-file-box" v-loading="sending">
 								<div class="chat-file-info">
 									<el-link class="chat-file-name" :underline="true" target="_blank" type="primary"
-										:href="data.url" :download="data.name">{{ data.name }}</el-link>
+										:href="contentData.url" :download="contentData.name">{{ contentData.name
+										}}</el-link>
 									<div class="chat-file-size">{{ fileSize }}</div>
 								</div>
 								<div class="chat-file-icon">
@@ -44,7 +45,7 @@
 							@click="onPlayVoice()">
 							<audio controls :src="JSON.parse(msgInfo.content).url"></audio>
 						</div>
-						<div title="发送中" v-if="sending && isTextMessage" class="sending" v-loading="'true'"></div>
+						<div title="发送中" v-if="sending" class="sending" v-loading="'true'"></div>
 						<div title="发送失败" v-else-if="sendFail" @click="onSendFail" class="send-fail el-icon-warning">
 						</div>
 					</div>
@@ -152,11 +153,11 @@ export default {
 		sendFail() {
 			return this.msgInfo.status == this.$enums.MESSAGE_STATUS.FAILED;
 		},
-		data() {
+		contentData() {
 			return JSON.parse(this.msgInfo.content)
 		},
 		fileSize() {
-			let size = this.data.size;
+			let size = this.contentData.size;
 			if (size > 1024 * 1024) {
 				return Math.round(size / 1024 / 1024) + "M";
 			}
@@ -199,6 +200,22 @@ export default {
 		},
 		isGroupMessage() {
 			return !!this.msgInfo.groupId;
+		},
+		imageStyle() {
+			// 计算图片的显示宽高，要求：任意边不能高于360px,不能低于60px,不能拉伸图片比例
+			let maxSize = this.configStore.fullScreen ? 360 : 240;
+			let minSize = 60;
+			let width = this.contentData.width;
+			let height = this.contentData.height;
+			if (width && height) {
+				let ratio = Math.min(width, height) / Math.max(width, height);
+				let w = Math.max(Math.min(width > height ? maxSize : ratio * maxSize, width), minSize);
+				let h = Math.max(Math.min(width > height ? ratio * maxSize : maxSize, height), minSize);
+				return `width: ${w}px;height:${h}px;object-fit: cover;`
+			} else {
+				// 兼容历史版本，历史数据没有记录宽高
+				return `max-width: ${maxSize}px;min-width:60px;max-height: ${maxSize}px;min-height:60px;`
+			}
 		}
 	}
 }
@@ -206,7 +223,7 @@ export default {
 
 <style lang="scss">
 .chat-message-item {
-	padding: 2px 10px;
+	padding: 3px 10px;
 	border-radius: 10px;
 
 	.message-tip {
@@ -254,7 +271,7 @@ export default {
 				.message-content-wrapper {
 					position: relative;
 					display: flex;
-					align-items: center;
+					align-items: end;
 
 					.sending {
 						width: 25px;
@@ -270,7 +287,7 @@ export default {
 						color: #e45050;
 						font-size: 30px;
 						cursor: pointer;
-						margin: 0 3px;
+						margin: 0 5px;
 					}
 				}
 
@@ -302,20 +319,10 @@ export default {
 				}
 
 				.message-image {
-					display: flex;
+					border-radius: 8px;
-					flex-wrap: nowrap;
+					border: 3px solid var(--im-color-primary-light-8);
-					flex-direction: row;
+					overflow: hidden;
-					align-items: center;
+					cursor: pointer;
-
-					.send-image {
-						min-width: 200px;
-						min-height: 150px;
-						max-width: 400px;
-						max-height: 300px;
-						border-radius: 8px;
-						cursor: pointer;
-					}
-
 				}
 
 				.message-file {
@@ -460,7 +467,6 @@ export default {
 					}
 
 					.message-text {
-						margin-left: 10px;
 						background-color: var(--im-color-primary-light-2);
 						color: #fff;
 

im-web/src/store/chatStore.js

@@ -154,7 +154,6 @@ export default defineStore('chatStore', {
 			}
 		},
 		insertMessage(msgInfo, chatInfo) {
-			let time = new Date().getTime()
 			let type = chatInfo.type;
 			// 记录消息的最大id
 			if (msgInfo.id && type == "PRIVATE" && msgInfo.id > this.privateMsgMaxId) {
@@ -230,7 +229,6 @@ export default defineStore('chatStore', {
 			chat.messages.splice(insertPos, 0, msgInfo);
 			chat.stored = false;
 			this.saveToStorage();
-			console.log("耗时:", new Date().getTime() - time)
 		},
 		updateMessage(msgInfo, chatInfo) {
 			// 获取对方id或群id