102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
// compositor.h
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#ifndef COMPOSITOR_H
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#define COMPOSITOR_H
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#include <stdint.h>
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#include <stdbool.h>
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// Animation types
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enum animation_type_t {
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ANIM_NONE = 0,
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ANIM_MOVE,
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ANIM_FADE,
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ANIM_SCALE,
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ANIM_MOVE_FADE // Combined animation
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};
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// Easing functions
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enum easing_t {
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EASE_LINEAR = 0,
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EASE_IN_QUAD,
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EASE_OUT_QUAD,
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EASE_IN_OUT_QUAD,
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EASE_IN_CUBIC,
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EASE_OUT_CUBIC,
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EASE_IN_OUT_CUBIC
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};
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extern "C" {
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typedef struct compositor_t compositor_t;
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// Initialize compositor with given dimensions
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compositor_t* compositor_init(uint32_t width, uint32_t height);
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// Destroy compositor and free resources
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void compositor_destroy(compositor_t* comp);
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// Insert element, returns unique ID
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uint32_t compositor_insert(compositor_t* comp,
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const uint32_t* fb,
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uint32_t fb_width,
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uint32_t fb_height,
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int32_t x, int32_t y,
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int32_t z_order, float scale = 1.0f);
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// Remove element by ID
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void compositor_remove(compositor_t* comp, uint32_t id);
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// AIO Update element properties
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void compositor_update(compositor_t* comp, uint32_t id,
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int32_t x, int32_t y,
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int32_t z_order, float scale,
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bool visible); // holy clusterfuck
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// Individual setters
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void compositor_set_position(compositor_t* comp, uint32_t id,
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int32_t x, int32_t y);
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void compositor_set_zorder(compositor_t* comp, uint32_t id,
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int32_t z_order);
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void compositor_set_visible(compositor_t* comp, uint32_t id,
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bool visible);
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void compositor_set_scale(compositor_t* comp, uint32_t id,
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float scale);
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// Advances all animations by a given time delta.
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void compositor_tick(compositor_t* comp, float delta_time_sec);
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// Instantly sets the element-wide alpha.
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void compositor_set_alpha(compositor_t* comp, uint32_t id, float alpha);
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// Starts a "slide" animation on an element.
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void compositor_animate_move(compositor_t* comp, uint32_t id,
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int32_t to_x, int32_t to_y,
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float duration_sec, easing_t easing);
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// Starts a "fade" or "dissolve" animation on an element.
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void compositor_animate_fade(compositor_t* comp, uint32_t id,
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float to_alpha,
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float duration_sec, easing_t easing);
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// Starts a "scale" animation on an element.
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void compositor_animate_scale(compositor_t* comp, uint32_t id,
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float to_scale,
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float duration_sec, easing_t easing);
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// Compose all visible elements and return framebuffer pointer
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const uint32_t* compositor_compose(compositor_t* comp);
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void compositor_mark_content_dirty(compositor_t* comp, uint32_t id);
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void compositor_mark_all_dirty(compositor_t* comp);
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// Returns the last error message set for this compositor instance.
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// Returns nullptr if no error has occurred.
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const char* compositor_get_last_error(compositor_t* comp);
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}
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#endif // COMPOSITOR_H
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