Pdf viewer: add remember postion and remember jump functions.

emacs-eaf · Jul 23, 2018 · cc9a46b · cc9a46b
1 parent 85dc02a
commit cc9a46b
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Showing 3 changed files with 24 additions and 0 deletions.
diff --git a/README.md b/README.md
@@ -104,6 +104,8 @@ Please don't run EAF with root user, root user just can access DBus's system bus
 |                    |                                               | 0                  | Zoomn reset                              |
 |                    |                                               | g                  | Goto page                                |
 |                    |                                               | p                  | Goto to percent                          |
+|                    |                                               | [                  | Remember position                        |
+|                    |                                               | ]                  | Remember jump                            |
 | Camera             | Type 'eaf-camera'                             |                    |                                          |
 | Demo               | Type 'eaf-demo'                               |                    |                                          |
 | File Transfer      | Type 'eaf-show-file-qrcode'                   |                    |                                          |

diff --git a/app/pdfviewer/buffer.py b/app/pdfviewer/buffer.py
@@ -110,6 +110,22 @@ def __init__(self, url, background_color):
 
         self.is_page_just_changed = False
 
+        self.remember_offset = None
+
+    def remember_current_position(self):
+        self.remember_offset = self.scroll_offset
+        self.message_to_emacs.emit("EAF pdf viewer: remember position.")
+
+    def remember_jump(self):
+        if self.remember_offset is None:
+            self.message_to_emacs.emit("EAF pdf viewer: no position can jump.")
+        else:
+            current_scroll_offset = self.scroll_offset
+            self.scroll_offset = self.remember_offset
+            self.update()
+
+            self.remember_offset = current_scroll_offset
+
     def get_page_pixmap(self, index, scale):
         # Just return cache pixmap when found match index and scale in cache dict.
         if self.page_cache_scale == scale:
@@ -258,6 +274,10 @@ def keyPressEvent(self, event):
             self.send_input_message("Jump to: ", "jump_page")
         elif event.key() == Qt.Key_P:
             self.send_input_message("Jump to percent: ", "jump_percent")
+        elif event.key() == Qt.Key_BracketLeft:
+            self.remember_current_position()
+        elif event.key() == Qt.Key_BracketRight:
+            self.remember_jump()
 
     def get_start_page_index(self):
         return int(self.scroll_offset * 1.0 / self.scale / self.page_height)

diff --git a/core/fake_key_event.py b/core/fake_key_event.py
@@ -66,6 +66,8 @@
     '''+''': Qt.Key_Plus,
     '''-''': Qt.Key_Minus,
     '''=''': Qt.Key_Equal,
+    '''[''': Qt.Key_BracketLeft,
+    ''']''': Qt.Key_BracketRight,
     '''@''': Qt.Key_At,
     '''"''': Qt.Key_QuoteDbl,
     '''$''': Qt.Key_Dollar,