From cf2133bb9615307d8fa6061430759a1b11b14771 Mon Sep 17 00:00:00 2001
From: Florian Bruhin <git@the-compiler.org>
Date: Thu, 20 Feb 2014 19:50:48 +0100
Subject: [PATCH] Add zoomin/zoomout commands.

---
 qutebrowser/app.py               |  2 ++
 qutebrowser/commands/commands.py | 16 +++++++++++++
 qutebrowser/qutebrowser.conf     |  2 ++
 qutebrowser/widgets/browser.py   | 39 ++++++++++++++++++++++++++++++++
 4 files changed, 59 insertions(+)

diff --git a/qutebrowser/app.py b/qutebrowser/app.py
index 4e6cce6a9..ccadb32f1 100644
--- a/qutebrowser/app.py
+++ b/qutebrowser/app.py
@@ -376,6 +376,8 @@ class QuteBrowser(QApplication):
             'paste':         browser.paste,
             'tabpaste':      browser.tabpaste,
             'crash':         self.crash,
+            'zoomin':        browser.cur_zoom_in,
+            'zoomout':       browser.cur_zoom_out,
         }
 
         handler = handlers[cmd]
diff --git a/qutebrowser/commands/commands.py b/qutebrowser/commands/commands.py
index 116ce997e..fb1a34e7f 100644
--- a/qutebrowser/commands/commands.py
+++ b/qutebrowser/commands/commands.py
@@ -280,6 +280,22 @@ class TabPaste(Command):
     nargs = '?'
 
 
+class ZoomIn(Command):
+
+    """Zoom in in the current tab."""
+
+    nargs = 0
+    count = True
+
+
+class ZoomOut(Command):
+
+    """Zoom out in the current tab."""
+
+    nargs = 0
+    count = True
+
+
 class Crash(Command):
 
     """Simply raise an exception for debugging."""
diff --git a/qutebrowser/qutebrowser.conf b/qutebrowser/qutebrowser.conf
index 635379883..faf330b32 100644
--- a/qutebrowser/qutebrowser.conf
+++ b/qutebrowser/qutebrowser.conf
@@ -110,6 +110,8 @@ pp = paste
 pP = paste sel
 Pp = tabpaste
 PP = tabpaste sel
+- = zoomout
++ = zoomin
 @Ctrl-Q@ = quit
 @Ctrl-Shift-T@ = undo
 @Ctrl-W@ = tabclose
diff --git a/qutebrowser/widgets/browser.py b/qutebrowser/widgets/browser.py
index db584313e..53a6be3a0 100644
--- a/qutebrowser/widgets/browser.py
+++ b/qutebrowser/widgets/browser.py
@@ -539,6 +539,26 @@ class TabbedBrowser(TabWidget):
         self.cur_temp_message.emit('Title yanked to {}'.format(
             'primary selection' if sel else 'clipboard'))
 
+    def cur_zoom_in(self, count=1):
+        """Zoom in in the current tab.
+
+        Args:
+            count: How many steps to take.
+
+        """
+        tab = self.currentWidget()
+        tab.zoom(count)
+
+    def cur_zoom_out(self, count=1):
+        """Zoom out in the current tab.
+
+        Args:
+            count: How many steps to take.
+
+        """
+        tab = self.currentWidget()
+        tab.zoom(-count)
+
     def switch_prev(self, count=1):
         """Switch to the ([count]th) previous tab.
 
@@ -639,6 +659,7 @@ class BrowserTab(QWebView):
     Attributes:
         page_: The QWebPage behind the view
         signal_cache: The signal cache associated with the view.
+        _zoom: A NeighborList with the zoom levels.
         _scroll_pos: The old scroll position.
         _shutdown_callback: Callback to be called after shutdown.
         _open_new_tab: Whether to open a new tab for the next action.
@@ -668,6 +689,10 @@ class BrowserTab(QWebView):
         self._shutdown_callback = None
         self._open_new_tab = False
         self._destroyed = {}
+        self._zoom = NeighborList(
+            config.config.get('general', 'zoomlevels').split(','),
+            default=config.config.get('general', 'defaultzoom'),
+            mode=NeighborList.BLOCK)
         self.page_ = BrowserPage(self)
         self.setPage(self.page_)
         self.signal_cache = SignalCache(uncached=['linkHovered'])
@@ -704,6 +729,20 @@ class BrowserTab(QWebView):
         else:
             return self.load(u)
 
+    def zoom(self, offset):
+        """Increase/Decrease the zoom level.
+
+        Args:
+            offset: The offset in the zoom level list.
+
+        Emit:
+            temp_message: Emitted with new zoom level.
+
+        """
+        level = self._zoom.getitem(offset)
+        self.setZoomFactor(float(level) / 100)
+        self.temp_message.emit("Zoom level: {}%".format(level))
+
     @pyqtSlot(str)
     def on_link_clicked(self, url):
         """Handle a link.