litehtml - lightweight html renderer

1 files changed, 148 insertions, 0 deletions

diff --git a/libs/litehtml/src/render_image.cpp b/libs/litehtml/src/render_image.cpp
new file mode 100644
index 0000000000..122344651b
--- /dev/null
+++ b/libs/litehtml/src/render_image.cpp
@@ -0,0 +1,148 @@
+#include "html.h"
+#include "render_image.h"
+#include "document.h"
+
+int litehtml::render_item_image::_render(int x, int y, const containing_block_context &containing_block_size, formatting_context* /*fmt_ctx*/, bool /*second_pass*/)
+{
+    int parent_width = containing_block_size.width;
+	containing_block_context self_size = calculate_containing_block_context(containing_block_size);
+
+    calc_outlines(parent_width);
+
+    m_pos.move_to(x, y);
+
+    document::ptr doc = src_el()->get_document();
+
+    litehtml::size sz;
+    src_el()->get_content_size(sz, containing_block_size.width);
+
+    m_pos.width		= sz.width;
+    m_pos.height	= sz.height;
+
+    src_el()->css_w().set_line_height(height());
+
+    if(src_el()->css().get_height().is_predefined() && src_el()->css().get_width().is_predefined())
+    {
+        m_pos.height	= sz.height;
+        m_pos.width		= sz.width;
+
+        // check for max-width
+        if(!src_el()->css().get_max_width().is_predefined())
+        {
+            int max_width = doc->to_pixels(src_el()->css().get_max_width(), src_el()->css().get_font_size(), parent_width);
+            if(m_pos.width > max_width)
+            {
+                m_pos.width = max_width;
+            }
+            if(sz.width)
+            {
+                m_pos.height = (int) ((float) m_pos.width * (float) sz.height / (float)sz.width);
+            } else
+            {
+                m_pos.height = sz.height;
+            }
+        }
+
+        // check for max-height
+        if(!src_el()->css().get_max_height().is_predefined())
+        {
+            int max_height = calc_max_height(sz.height, containing_block_size.height);
+            if(m_pos.height > max_height)
+            {
+                m_pos.height = max_height;
+            }
+            if(sz.height)
+            {
+                m_pos.width = (int) ((float )m_pos.height * (float)sz.width / (float)sz.height);
+            } else
+            {
+                m_pos.width = sz.width;
+            }
+        }
+    } else if(!src_el()->css().get_height().is_predefined() && src_el()->css().get_width().is_predefined())
+    {
+		if(self_size.height.type != containing_block_context::cbc_value_type_auto && self_size.height > 0)
+		{
+			m_pos.height = self_size.height;
+		}
+
+        // check for max-height
+        if(!src_el()->css().get_max_height().is_predefined())
+        {
+            int max_height = calc_max_height(sz.height, containing_block_size.height);
+            if(m_pos.height > max_height)
+            {
+                m_pos.height = max_height;
+            }
+        }
+
+        if(sz.height)
+        {
+            m_pos.width = (int) ((float )m_pos.height * (float)sz.width / (float)sz.height);
+        } else
+        {
+            m_pos.width = sz.width;
+        }
+    } else if(src_el()->css().get_height().is_predefined() && !src_el()->css().get_width().is_predefined())
+    {
+        m_pos.width = (int) src_el()->css().get_width().calc_percent(parent_width);
+
+        // check for max-width
+        if(!src_el()->css().get_max_width().is_predefined())
+        {
+            int max_width = doc->to_pixels(src_el()->css().get_max_width(), src_el()->css().get_font_size(), parent_width);
+            if(m_pos.width > max_width)
+            {
+                m_pos.width = max_width;
+            }
+        }
+
+        if(sz.width)
+        {
+            m_pos.height = (int) ((float) m_pos.width * (float) sz.height / (float)sz.width);
+        } else
+        {
+            m_pos.height = sz.height;
+        }
+    } else
+    {
+        m_pos.width		= (int) src_el()->css().get_width().calc_percent(parent_width);
+        m_pos.height	= 0;
+		if(self_size.height.type != containing_block_context::cbc_value_type_auto && self_size.height > 0)
+		{
+			m_pos.height = self_size.height;
+		}
+
+        // check for max-height
+        if(!src_el()->css().get_max_height().is_predefined())
+        {
+            int max_height = calc_max_height(sz.height, containing_block_size.height);
+            if(m_pos.height > max_height)
+            {
+                m_pos.height = max_height;
+            }
+        }
+
+        // check for max-height
+        if(!src_el()->css().get_max_width().is_predefined())
+        {
+            int max_width = doc->to_pixels(src_el()->css().get_max_width(), src_el()->css().get_font_size(), parent_width);
+            if(m_pos.width > max_width)
+            {
+                m_pos.width = max_width;
+            }
+        }
+    }
+
+    m_pos.x	+= content_offset_left();
+    m_pos.y += content_offset_top();
+
+    return m_pos.width + content_offset_left() + content_offset_right();
+}
+
+int litehtml::render_item_image::calc_max_height(int image_height, int containing_block_height)
+{
+    document::ptr doc = src_el()->get_document();
+    return doc->to_pixels(src_el()->css().get_max_height(), src_el()->css().get_font_size(),
+						  containing_block_height == 0 ? image_height : containing_block_height);
+}