display-resolutionzooming
I have a 4 k display which is great. I can fit a lot of stuff in there and most applications have a big enough font which can be easily read even in a quarter of the intended area (when designed for full hd). However, there are some applications with a too small font size which makes it hard to read what they say.
Finding options to zoom the entire desktop (on demand) isn't hard, but I only want to zoom specific windows. It this possible, too?
I'm using Ubuntu 15.04 with Unity.
With GNOME Shell (instead of Compiz) as Window Manager (wmctrl -m):
Surprisingly, numpad +/- won't work.
You can change the shortcuts on Settings > Devices > Keyboard and zoom options on Settings > Universal access settings > Zoom:
Issue: Screenshot of an area (Ctrl + Shift + PrntScrn seems to be broken when zoom is enabled. It captures a region with an offset. Also, it doesn't start zooming where is the pointer.
You can try to edit the Nautilus source code to scale the font in the zoom like in Nautilus 3.4.
NOTE: In this example I'm running ubuntu 13.04 with nautilus (files) 3.6.3. You can test this in a virtual machine to see if everything is OK.
First of all, I set the Nautilus Prefereces in "List View" as Default View and "200%" the zoom in List View Defaults.
By default the result with no scale font would be:
1) Make sure you have enable the Source code repository
Open a Terminal window and type:
sudo apt-get update2) In the Terminal type the following to install the necessary packages.
sudo apt-get install build-essential quilt3) Install build dependencies.
sudo apt-get build-dep nautilus4) Create a folder to download the source code.
mkdir ~/Downloads/src
cd ~/Downloads/src
5) Download the source code & Export variables.
apt-get source nautilus
export QUILT_PATCHES=debian/patches
export EDITOR=gedit
6) Create the patch and Edit the source code.
cd nautilus-3.6.3/
quilt new my_custom_zoom.patch
quilt edit src/nautilus-list-view.c
After line 133 add:
static void nautilus_list_view_scale_font_size (NautilusListView *view,
NautilusZoomLevel new_level);
After line 2506 add:
static void
nautilus_list_view_scale_font_size (NautilusListView *view,
NautilusZoomLevel new_level)
{
GList *l;
static gboolean first_time = TRUE;
static double pango_scale[7];
int medium;
int i;
g_return_if_fail (new_level >= NAUTILUS_ZOOM_LEVEL_SMALLEST &&
new_level <= NAUTILUS_ZOOM_LEVEL_LARGEST);
if (first_time) {
first_time = FALSE;
medium = NAUTILUS_ZOOM_LEVEL_SMALLER;
pango_scale[medium] = PANGO_SCALE_MEDIUM;
for (i = medium; i > NAUTILUS_ZOOM_LEVEL_SMALLEST; i--) {
pango_scale[i - 1] = (1 / 1.2) * pango_scale[i];
}
for (i = medium; i < NAUTILUS_ZOOM_LEVEL_LARGEST; i++) {
pango_scale[i + 1] = 1.2 * pango_scale[i];
}
}
g_object_set (G_OBJECT (view->details->file_name_cell),
"scale", pango_scale[new_level],
NULL);
for (l = view->details->cells; l != NULL; l = l->next) {
g_object_set (G_OBJECT (l->data),
"scale", pango_scale[new_level],
NULL);
}
}
After line 2569 add:
/* Scale text. */
nautilus_list_view_scale_font_size (view, new_level);
Remove lines 3051 & 3052.
/* ensure that the zoom level is always set before settings up the tree view columns */
list_view->details->zoom_level = get_default_zoom_level ();
7) Build the deb packages.
quilt refreshfakeroot dpkg-buildpackage8) Install the deb packages.
cd ..
sudo dpkg -i *deb
9) Finally you can Logout and Login to see the changes.
Result:
NOTE: You can zoom in, zoom out with the Ctrl + Mouse Whell or with Ctrol++ & Ctrol+- keys.
Hope it helps.
Best Answer
Here is a script called
run_scaledwhich uses xpra to run a single application in a scaled environment:https://github.com/kaueraal/run_scaled