gui: make bg-image accept gifs too

Toni500github · Oct 28, 2024 · 25f06d1 · 25f06d1
1 parent eb03247
commit 25f06d1
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Showing 2 changed files with 57 additions and 19 deletions.
diff --git a/include/gui.hpp b/include/gui.hpp
@@ -5,6 +5,7 @@
 
 #include "config.hpp"
 #include "gdkmm/pixbuf.h"
+#include "gdkmm/pixbufanimation.h"
 #include "gtkmm/alignment.h"
 #include "gtkmm/box.h"
 #include "gtkmm/container.h"
@@ -28,28 +29,53 @@ class Window : public Gtk::Window
     Gtk::Alignment  m_alignment;
     Gtk::Label      m_label;
     Gtk::Image     *m_img, m_bg_image;
-    Glib::RefPtr<Gdk::Pixbuf> m_original_pixbuf;
+    Glib::RefPtr<Gdk::PixbufAnimationIter> m_iter;
+    Glib::RefPtr<Gdk::PixbufAnimation> m_bg_animation;
+    Glib::RefPtr<Gdk::Pixbuf> m_bg_static_image;
+    int m_width, m_height;
 
-    void update_background_image(const int width, const int height)
+    void on_window_resize(Gtk::Allocation& allocation)
     {
-        if (m_original_pixbuf)
-        {
-            const Glib::RefPtr<Gdk::Pixbuf> scaled_pixbuf =
-                m_original_pixbuf->scale_simple(width, height, Gdk::INTERP_BILINEAR);
+        m_width = allocation.get_width();
+        m_height = allocation.get_height();
 
-            m_bg_image.set(scaled_pixbuf);
-        }
+        if (m_bg_static_image)
+            // static image: Update to fit the new window size
+            update_static_image();
+        else if (m_iter)
+            // animated image: Update the current frame
+            update_frame();
     }
 
-    // Signal handler for window resize
-    void on_window_resized(Gtk::Allocation& allocation)
+    bool on_update_animation()
     {
-        const int new_width  = allocation.get_width();
-        const int new_height = allocation.get_height();
+        if (!m_iter)
+            m_iter = m_bg_animation->get_iter(nullptr);
+        else
+            m_iter->advance();
+
+        update_frame();
+        return true;  // continue the timer
+    }
 
-        // Update the background image with the new dimensions
-        update_background_image(new_width, new_height);
+    void update_static_image()
+    {
+        // scale the static image to fit the window size
+        const Glib::RefPtr<Gdk::Pixbuf> scaled_image = m_bg_static_image->scale_simple(m_width, m_height, Gdk::INTERP_BILINEAR);
+        m_bg_image.set(scaled_image);
     }
+
+    void update_frame()
+    {
+        // scale the current frame of the animation to fit the window size
+        const Glib::RefPtr<Gdk::Pixbuf> current_frame = m_iter->get_pixbuf();
+        if (current_frame)
+        {
+            const Glib::RefPtr<Gdk::Pixbuf> scaled_frame = current_frame->scale_simple(m_width, m_height, Gdk::INTERP_BILINEAR);
+            m_bg_image.set(scaled_frame);
+        }
+    }
+
 };
 
 }  // namespace GUI

diff --git a/src/gui.cpp b/src/gui.cpp
@@ -12,6 +12,7 @@
 #include "fmt/ranges.h"
 #include "gdkmm/pixbufanimation.h"
 #include "gtkmm/enums.h"
+#include "glibmm/main.h"
 #include "pangomm/fontdescription.h"
 #include "parse.hpp"
 #include "query.hpp"
@@ -110,8 +111,8 @@ Window::Window(const Config& config, const colors_t& colors, const std::string_v
     m_box.set_orientation(Gtk::ORIENTATION_HORIZONTAL);
 
     // https://stackoverflow.com/a/76372996
-    auto                   context = m_label.get_pango_context();
-    Pango::FontDescription font(config.font);
+    Glib::RefPtr<Pango::Context> context = m_label.get_pango_context();
+    Pango::FontDescription       font(config.font);
     debug("font family = {}", font.get_family().raw());
     debug("font style = {}", fmt::underlying(font.get_style()));
     debug("font weight = {}", fmt::underlying(font.get_weight()));
@@ -136,8 +137,19 @@ Window::Window(const Config& config, const colors_t& colors, const std::string_v
         if (!std::filesystem::exists(config.gui_bg_image))
             die("Background image path '{}' doesn't exist", config.gui_bg_image);
 
-        m_original_pixbuf = Gdk::Pixbuf::create_from_file(config.gui_bg_image);
-        m_bg_image.set(m_original_pixbuf);
+        m_bg_animation = Gdk::PixbufAnimation::create_from_file(config.gui_bg_image);
+        if (m_bg_animation->is_static_image())
+        {
+            // set it initially and resize only on window resize
+            m_bg_static_image = m_bg_animation->get_static_image();
+            update_static_image();
+        }
+        else
+        {
+            // animated image: use timer to update frames
+            const int duration = m_bg_animation->get_iter(nullptr)->get_delay_time();
+            Glib::signal_timeout().connect(sigc::mem_fun(*this, &Window::on_update_animation), duration);
+        }
         m_overlay.add_overlay(m_bg_image);
     }
 
@@ -147,7 +159,7 @@ Window::Window(const Config& config, const colors_t& colors, const std::string_v
     m_overlay.add_overlay(m_alignment);
     add(m_overlay);
 
-    signal_size_allocate().connect(sigc::mem_fun(*this, &Window::on_window_resized));
+    signal_size_allocate().connect(sigc::mem_fun(*this, &Window::on_window_resize));
 
     show_all_children();
 }