修复gtk读取图片像素时alpha通道异常的bug

.gitignore

@@ -0,0 +1 @@
+__pycache__

app.js

@@ -5,58 +5,107 @@
  */
 
 import 'es.shim'
-import { $, bind } from 'wkit'
+import { html, css, Component } from 'wkit'
 
-async function test1() {
-  let txt = await native.clipboard.readText()
-  $('input').value = txt
+class App extends Component {
+  static props = {
+    input: '',
+    img: ''
+  }
+
+  static styles = css`
+    .output {
+      max-width: 100%;
+      white-space: pre-wrap;
+      word-break: break-all;
+    }
+  `
+
+  render() {
+    return html`
+      <button @click=${this.test1}>Test 1</button>
+      <button @click=${this.test2}>Test 2</button>
+
+      <a target="_blank" href="about:blank">打开控制台</a>
+
+      <div class="output">loading...</div>
+
+      <input value=${this.input} />
+
+      <hr />
+      <button @click=${this.writeImage}>写图片到剪切板</button>
+      <button
+        @click=${async function () {
+          native.quit()
+        }}
+      >
+        退出
+      </button>
+      <button @click=${this.createTray}>tray</button>
+      <button @click=${this.register}>screen</button>
+      <img style="width:100px;border:1px solid #09f;" src=${this.img} />
+      <textarea @paste=${this.pasteImg}></textarea>
+    `
+  }
+
+  async test1() {
+    let txt = await native.clipboard.readText()
+    console.log('<><><>', txt)
+    this.input = txt
+  }
+
+  async test2() {
+    native.clipboard.writeText('这是一段写进剪切板的文本')
+  }
+
+  async writeImage() {
+    // let img = await native.image('/code/gtk/webkit/debian.png')
+    // native.clipboard.writeImage(img)
+    native.clipboard.writeImage('/code/gtk/webkit/red.png')
+    // try {
+    //   this.img = URL.createObjectURL(await img.export())
+    // } catch (err) {
+    //   alert(err)
+    // }
+  }
+
+  quit() {
+    native.quit()
+  }
+
+  createTray() {
+    native.tray()
+  }
+
+  async register() {
+    // console.log(await native.globalShortcut.enabled)
+
+    native.globalShortcut.register('<Ctrl>2', function () {
+      alert('<Ctrl>2被绑定了')
+    })
+    // console.log(await native.screen.getAllDisplays())
+    // console.log(await native.screen.getPrimaryDisplay())
+  }
+
+  async pasteImg(ev) {
+    let items = ev.clipboardData.items
+
+    let img = await window?.native?.clipboard?.readImage()
+
+    console.log(img)
+
+    if (img) {
+      this.img = URL.createObjectURL(await img.export())
+    }
+
+    for (let it of items) {
+      let file = it.getAsFile()
+      if (file) {
+        this.img = URL.createObjectURL(file)
+        break
+      }
+    }
+  }
 }
 
-async function test2() {
-  native.clipboard.writeText('这是一段写进剪切板的文本')
-  // native.handler('blabla', { foo: 'bar' }).then(r => {
-  //   $('#output').innerHTML = JSON.stringify(r)
-  // })
-}
-
-bind($('.btn1'), 'click', test1)
-bind($('.btn2'), 'click', test2)
-bind($('.btn3'), 'click', async function () {
-  // window.open('about:blank')
-  // let img = await native.clipboard.writeImage('/code/gtk/webkit/debian.png')
-  let img = await native.image('/code/gtk/webkit/debian.png')
-  native.clipboard.writeImage(img)
-  // native.clipboard.writeImage('/code/gtk/webkit/debian.png')
-  try {
-    $('img').src = URL.createObjectURL(await img.export())
-  } catch (err) {
-    alert(err)
-  }
-})
-bind($('.btn4'), 'click', async function () {
-  native.quit()
-  // native.clipboard.clear()
-})
-
-bind($('.btn5'), 'click', async function () {
-  native.tray()
-})
-
-bind($('.btn6'), 'click', async function () {
-  // console.log(await native.globalShortcut.enabled)
-
-  native.globalShortcut.register('<Ctrl>2', function () {
-    alert('<Ctrl>2被绑定了')
-  })
-  // console.log(await native.screen.getAllDisplays())
-  // console.log(await native.screen.getPrimaryDisplay())
-})
-
-bind($('textarea'), 'paste', async function (ev) {
-  let items = ev.clipboardData.items
-  for (let it of items) {
-    let file = it.getAsFile()
-    $('img').src = URL.createObjectURL(file)
-    break
-  }
-})
+App.reg('app')

demo.js

@@ -1,5 +0,0 @@
-import fs from 'iofs'
-
-let buf = fs.cat('./debian.png')
-console.log(buf)
-console.log([...buf], buf.byteLength)

index.html

@@ -16,30 +16,11 @@
       }
     }
   </script>
-  <style>
-    #output {max-width:100%;white-space: pre-wrap;word-break: break-all;}
-  </style>
+  <script type="module" src="/app.js"></script>
 </head>
 <body>
 
-<button class="btn1">Test 1</button>
-<button class="btn2">Test 2</button>
-
-<a target="_blank" href="about:blank">打开控制台</a>
-
-<div id="output">loading...</div>
-
-<input type="text">
-
-<hr>
-<button class="btn3">写图片到剪切板</button>
-<button class="btn4">退出</button>
-<button class="btn5">tray</button>
-<button class="btn6">screen</button>
-<img style="width:100px;border:1px solid #09f;" src="" alt="">
-<textarea></textarea>
-  
-<script type="module" src="/app.js"></script>
+<wc-app></wc-app>
 
 </body>
 </html>

inject.js

@@ -83,6 +83,7 @@ class NativeImage {
     this.width = obj.width
     this.height = obj.height
     this.type = MIME_TYPES[obj.filepath.split('.').pop()]
+    console.log(obj)
   }
 
   toPixbuf() {
@@ -179,7 +180,9 @@ Object.assign(native, {
       return handler('clipboard', { action: 'set_text', value }, null)
     },
     readImage() {
-      return handler('clipboard', { action: 'wait_for_image' })
+      return handler('clipboard', { action: 'wait_for_image' }).then(r =>
+        r ? new NativeImage(r) : r
+      )
     },
     writeImage(value) {
       if (typeof value === 'object') {

main.py

@@ -10,6 +10,8 @@ gi.require_version("Keybinder", "3.0")
 from gi.repository import Gtk, Gdk, WebKit2, GLib, Keybinder
 from gi.repository.GdkPixbuf import Pixbuf
 
+from notes.utils import *
+
 # 优先尝试使用指示器, 没有再使用 Gtk.StatusIcon
 try:
   gi.require_version('AyatanaAppIndicator3', '0.1')
@@ -22,21 +24,6 @@ except (ValueError, ImportError):
 Keybinder.init()
 
 
-def get_monitor_info(monitor):
-  return {
-    "model": monitor.props.model, 
-    "scale_factor": monitor.props.scale_factor, 
-    "manufacturer": monitor.props.manufacturer, 
-    "refresh_rate": monitor.props.refresh_rate,
-    "is_primary": monitor.is_primary(),
-    "geometry": {
-      "width": monitor.props.geometry.width, 
-      "height": monitor.props.geometry.height, 
-      "x": monitor.props.geometry.x, 
-      "y": monitor.props.geometry.y, 
-    }
-  }
-
 
 class WebKitWindow(Gtk.Window):
   def __init__(self):
@@ -164,6 +151,7 @@ class WebKitWindow(Gtk.Window):
           # 前端传进来的值, 如果是路径的话, 直接读取
           if type(image) == str:
             image = Pixbuf.new_from_file(image)
+            print(pixbuf_to_dict(image, params['value']))
           else:
             image = Pixbuf.new_from_data(
               data = bytes(image['bytes']),
@@ -174,18 +162,21 @@ class WebKitWindow(Gtk.Window):
               height = image['height'],
               rowstride = image['rowstride']
             )
-
           self.clipboard.set_image(image)
           self.clipboard.store()
 
+        # 读图片
+        elif params['action'] == 'wait_for_image':
+          output = self.clipboard.wait_for_image()
+          output = pixbuf_to_dict(output, 'noname.png')
+
         # 清除剪切板
         elif params['action'] == 'clear':
           self.clipboard.clear()
 
         # 回调给前端
-        if callback and output:
+        if callback:
           scripts = 'native.$emit("' + callback + '",' + json.dumps(output) + ')'
-          print(scripts)
           self.webview.evaluate_javascript(scripts, -1)
 
       # 退出app
@@ -196,17 +187,7 @@ class WebKitWindow(Gtk.Window):
       case 'image':
         filename = params['value']
         pixbuf = Pixbuf.new_from_file(filename)
-        image = {
-          "width": pixbuf.get_width(),
-          "height": pixbuf.get_height(),
-          "colorspace": pixbuf.get_colorspace(),
-          "has_alpha": pixbuf.	get_has_alpha(),
-          "bits_per_sample": pixbuf.get_bits_per_sample(),
-          "rowstride": pixbuf.get_rowstride(),
-          "filepath": filename,
-          "bytes": list(pixbuf.get_pixels())
-        }
-
+        image = pixbuf_to_dict(pixbuf, filename)
 
         scripts = 'native.$emit("' + callback + '",' + json.dumps(image) + ')'
       

notes/utils.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# @author yutent<yutent.io@gmail.com>
+# @date 2023/07/28 14:39:33
+
+
+def get_monitor_info(monitor):
+  return {
+    "model": monitor.props.model, 
+    "scale_factor": monitor.props.scale_factor, 
+    "manufacturer": monitor.props.manufacturer, 
+    "refresh_rate": monitor.props.refresh_rate,
+    "is_primary": monitor.is_primary(),
+    "geometry": {
+      "width": monitor.props.geometry.width, 
+      "height": monitor.props.geometry.height, 
+      "x": monitor.props.geometry.x, 
+      "y": monitor.props.geometry.y, 
+    }
+  }
+
+
+def pixbuf_to_dict(pixbuf, filename = ''):
+  has_alpha = pixbuf.get_has_alpha()
+
+  # 没有apha通道时, get_pixels() 得到像素矩阵会出现极个别像素出现alpha通道
+  # 所以, 这里强制设置alpha通道为false, 补全像素矩阵的数据
+  if has_alpha is False:
+    pixbuf = pixbuf.add_alpha(False, 0, 0, 0)
+
+  if pixbuf:
+    image = {
+      "width": pixbuf.get_width(),
+      "height": pixbuf.get_height(),
+      "colorspace": pixbuf.get_colorspace(),
+      "has_alpha": has_alpha,
+      "bits_per_sample": pixbuf.get_bits_per_sample(),
+      "rowstride": pixbuf.get_rowstride(),
+      "filepath": filename,
+      "length": pixbuf.get_byte_length(),
+      "bytes": list(pixbuf.get_pixels())
+    }
+  else:
+    image = None
+
+  return image