From aac75de16be1ac7ce7fe469fe04208bf754271cd Mon Sep 17 00:00:00 2001
From: Luca Errani <luca.errani1@gmail.com>
Date: Wed, 15 Jan 2020 18:24:18 +0100
Subject: [PATCH] Ctrl++/Ctrl+- can increase/decrease font size

---
 mousepad/mousepad-window-ui.xml |  2 +
 mousepad/mousepad-window.c      | 84 +++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+)

diff --git a/mousepad/mousepad-window-ui.xml b/mousepad/mousepad-window-ui.xml
index 4eef0b3..28e5413 100644
--- a/mousepad/mousepad-window-ui.xml
+++ b/mousepad/mousepad-window-ui.xml
@@ -93,6 +93,8 @@
 
     <menu action="view-menu">
       <menuitem action="font" />
+      <menuitem action="zoom-in" />
+      <menuitem action="zoom-out" />
       <separator />
       <menu action="color-scheme-menu">
         <placeholder name="placeholder-color-scheme-items" />
diff --git a/mousepad/mousepad-window.c b/mousepad/mousepad-window.c
index 9f33844..152ca62 100644
--- a/mousepad/mousepad-window.c
+++ b/mousepad/mousepad-window.c
@@ -325,6 +325,10 @@ static void              mousepad_window_action_go_to_position        (GtkAction
                                                                        MousepadWindow         *window);
 static void              mousepad_window_action_select_font           (GtkAction              *action,
                                                                        MousepadWindow         *window);
+static void              mousepad_window_action_zoom_in               (GtkAction              *action,
+                                                                       MousepadWindow         *window);
+static void              mousepad_window_action_zoom_out              (GtkAction              *action,
+                                                                       MousepadWindow         *window);
 static void              mousepad_window_action_line_numbers          (GtkToggleAction        *action,
                                                                        MousepadWindow         *window);
 static void              mousepad_window_action_menubar               (GtkToggleAction        *action,
@@ -465,6 +469,8 @@ static const GtkActionEntry action_entries[] =
 
   { "view-menu", NULL, N_("_View"), NULL, NULL, NULL, },
     { "font", GTK_STOCK_SELECT_FONT, N_("Select F_ont..."), NULL, N_("Change the editor font"), G_CALLBACK (mousepad_window_action_select_font), },
+    { "zoom-in", GTK_STOCK_ZOOM_IN, N_("Zoom in"), "<control>plus", N_("Increase font size"), G_CALLBACK (mousepad_window_action_zoom_in), },
+    { "zoom-out", GTK_STOCK_ZOOM_OUT, N_("Zoom out"), "<control>minus", N_("Decrease font size"), G_CALLBACK (mousepad_window_action_zoom_out), },
     { "color-scheme-menu", NULL, N_("_Color Scheme"), NULL, NULL, NULL, },
 
   { "document-menu", NULL, N_("_Document"), NULL, NULL, NULL, },
@@ -5016,6 +5022,84 @@ mousepad_window_action_select_font (GtkAction      *action,
   gtk_widget_destroy (dialog);
 }
 
+static void
+mousepad_window_action_zoom_in     (GtkAction      *action,
+                                    MousepadWindow *window)
+{
+  gchar            *font_name;
+  gchar             tmp_buffer[3];
+  int               len, font_size;
+
+  g_return_if_fail (MOUSEPAD_IS_WINDOW (window));
+  g_return_if_fail (MOUSEPAD_IS_DOCUMENT (window->active));
+
+  /* set the current font name */
+  font_name = MOUSEPAD_SETTING_GET_STRING (FONT_NAME);
+
+  /* extract last 2 chars (font size) */
+  len = strlen(font_name);
+  font_size = atoi(font_name + len - 2);
+
+  /* set 72 as maximum size */
+  if (font_size + 2 > 72) {
+    g_free (font_name);
+    return;
+  }
+
+  /* remove font size, 1 digit if lesser than 10, 2 otherwise */
+  font_name[len - (font_size < 10 ? 1 : 2)] = '\0';
+
+  g_snprintf(tmp_buffer, 3, "%d", font_size + 2);
+  strcat(font_name, tmp_buffer);
+
+  /* store the font in the preferences */
+  MOUSEPAD_SETTING_SET_STRING (FONT_NAME, font_name);
+  /* stop using default font */
+  MOUSEPAD_SETTING_SET_BOOLEAN (USE_DEFAULT_FONT, FALSE);
+
+  /* cleanup */
+  g_free (font_name);
+}
+
+static void
+mousepad_window_action_zoom_out (GtkAction      *action,
+                                    MousepadWindow *window)
+{
+  gchar            *font_name;
+  gchar             tmp_buffer[3];
+  int               len, font_size;
+
+  g_return_if_fail (MOUSEPAD_IS_WINDOW (window));
+  g_return_if_fail (MOUSEPAD_IS_DOCUMENT (window->active));
+
+  /* set the current font name */
+  font_name = MOUSEPAD_SETTING_GET_STRING (FONT_NAME);
+
+  /* extract last 2 chars (font size) */
+  len = strlen(font_name);
+  font_size = atoi(font_name + len - 2);
+
+  /* set 6 as minimum size */
+  if (font_size - 2 < 6){
+    g_free (font_name);
+    return;
+  }
+
+  /* remove font size, 1 digit if lesser than 10, 2 otherwise */
+  font_name[len - (font_size < 10 ? 1 : 2)] = '\0';
+
+  g_snprintf(tmp_buffer, 3, "%d", font_size - 2);
+  strcat(font_name, tmp_buffer);
+
+
+  /* store the font in the preferences */
+  MOUSEPAD_SETTING_SET_STRING (FONT_NAME, font_name);
+  /* stop using default font */
+  MOUSEPAD_SETTING_SET_BOOLEAN (USE_DEFAULT_FONT, FALSE);
+
+  /* cleanup */
+  g_free (font_name);
+}
 
 
 static void
-- 
2.20.1