LibGUI: Add a new GUI::Image component for display images

New GUI::Image component for replace Label usage for icons and images.
2025-05-31 08:48:11 +00:00 · 2020-06-14 11:04:58 +03:00 · 2020-06-14 11:04:58 +03:00 · ccb0d00020
commit ccb0d00020
parent 4e43cd8252
3 changed files with 205 additions and 0 deletions
--- a/Libraries/LibGUI/Image.cpp
+++ b/Libraries/LibGUI/Image.cpp
@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2020, Hüseyin Aslıtürk <asliturk@hotmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "Image.h"
+#include <AK/MappedFile.h>
+#include <LibGUI/Painter.h>
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/ImageDecoder.h>
+
+namespace GUI {
+
+Image::Image(const StringView&)
+    : m_timer(Core::Timer::construct())
+
+{
+    set_frame_thickness(0);
+    set_frame_shadow(Gfx::FrameShadow::Plain);
+    set_frame_shape(Gfx::FrameShape::NoFrame);
+    set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
+    set_auto_resize(true);
+}
+
+Image::~Image()
+{
+}
+
+void Image::set_bitmap(const Gfx::Bitmap* bitmap)
+{
+    if (m_bitmap == bitmap)
+        return;
+
+    m_bitmap = bitmap;
+    if (m_auto_resize)
+        set_preferred_size(m_bitmap->width(), m_bitmap->height());
+
+    update();
+}
+
+void Image::set_auto_resize(bool value)
+{
+    m_auto_resize = value;
+
+    if (m_bitmap)
+        set_preferred_size(m_bitmap->width(), m_bitmap->height());
+}
+
+void Image::animate()
+{
+    m_current_frame_index = (m_current_frame_index + 1) % m_image_decoder->frame_count();
+
+    const auto& current_frame = m_image_decoder->frame(m_current_frame_index);
+    set_bitmap(current_frame.image);
+
+    if (current_frame.duration != m_timer->interval()) {
+        m_timer->restart(current_frame.duration);
+    }
+
+    if (m_current_frame_index == m_image_decoder->frame_count() - 1) {
+        ++m_loops_completed;
+        if (m_loops_completed > 0 && m_loops_completed == m_image_decoder->loop_count()) {
+            m_timer->stop();
+        }
+    }
+}
+
+void Image::load_from_file(const StringView& path)
+{
+    MappedFile mapped_file(path);
+    if (!mapped_file.is_valid())
+        return;
+
+    m_image_decoder = Gfx::ImageDecoder::create((const u8*)mapped_file.data(), mapped_file.size());
+    auto bitmap = m_image_decoder->bitmap();
+    ASSERT(bitmap);
+
+    set_bitmap(bitmap);
+
+    if (path.ends_with(".gif")) {
+        if (m_image_decoder->is_animated() && m_image_decoder->frame_count() > 1) {
+            const auto& first_frame = m_image_decoder->frame(0);
+            m_timer->set_interval(first_frame.duration);
+            m_timer->on_timeout = [this] { animate(); };
+            m_timer->start();
+        }
+    }
+}
+
+void Image::mousedown_event(GUI::MouseEvent&)
+{
+    if (on_click)
+        on_click();
+}
+
+void Image::paint_event(PaintEvent& event)
+{
+    Frame::paint_event(event);
+
+    if (!m_bitmap) {
+        return;
+    }
+
+    Painter painter(*this);
+
+    if (m_should_stretch) {
+        painter.draw_scaled_bitmap(frame_inner_rect(), *m_bitmap, m_bitmap->rect());
+    } else {
+        auto location = frame_inner_rect().center().translated(-(m_bitmap->width() / 2), -(m_bitmap->height() / 2));
+        painter.blit(location, *m_bitmap, m_bitmap->rect());
+    }
+}
+}