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asarium
f12a8ff432
This emulates the "scrolling text" effect that is present in briefings. It is not exactly the same since it just goes pixel wise and not by character but it looks good enough.
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
#pragma once
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// Our Assert conflicts with the definitions inside libRocket
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#pragma push_macro("Assert")
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#undef Assert
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#include <Rocket/Core/Element.h>
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#include <Rocket/Core/Geometry.h>
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#include <Rocket/Core/Texture.h>
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#pragma pop_macro("Assert")
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namespace scpui {
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namespace elements {
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using namespace Rocket::Core;
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class AnimationElement : public Rocket::Core::Element {
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public:
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AnimationElement(const String& tag_in);
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~AnimationElement() override;
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/// Returns the element's inherent size.
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/// @param[out] The element's intrinsic dimensions.
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/// @return True.
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bool GetIntrinsicDimensions(Vector2f& dimensions) override;
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protected:
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/// Renders the image.
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void OnRender() override;
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void OnUpdate() override;
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/// Checks for changes to the image's source or dimensions.
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/// @param[in] changed_attributes A list of attributes changed on the element.
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void OnAttributeChange(const AttributeNameList& changed_attributes) override;
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/// Regenerates the element's geometry on a resize event.
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/// @param[in] event The event to process.
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void ProcessEvent(Event& event) override;
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private:
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// Generates the element's geometry.
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void GenerateGeometry();
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// Loads the element's texture, as specified by the 'src' attribute.
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bool LoadTexture();
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// Resets the values of the 'coords' attribute to mark them as unused.
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void ResetCoords();
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// The texture this element is rendering from.
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Texture texture;
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// True if we need to refetch the texture's source from the element's attributes.
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bool texture_dirty;
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// The element's computed intrinsic dimensions. If either of these values are set to -1, then
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// that dimension has not been computed yet.
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Vector2f dimensions;
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// The integer coords extracted from the 'coords' attribute. using_coords will be false if
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// these have not been specified or are invalid.
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int coords[4];
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bool using_coords;
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// The geometry used to render this element.
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Geometry geometry;
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bool geometry_dirty;
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float animation_last_update_time = -1.0f;
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};
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} // namespace elements
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} // namespace scpui
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