#include "GUIDraw.h"

#include <SDL2/SDL_opengl.h>
#include "renderer.h"

namespace GUIDraw
{
	void DrawLine(const Vector2& a, const Vector2& b, const Color& color)
	{
		Renderer::SetState(RENDER_BLEND);
		glColor4ub(color.r, color.g, color.b, color.a);
		glBegin(GL_LINES);
		glVertex2i(a.x, a.y);
		glVertex2i(b.x, b.y);
		glEnd();
	}

	void DrawRect(const Vector4& rect, const Color& color)
	{
		Renderer::SetState(RENDER_BLEND);
		glColor4ub(color.r, color.g, color.b, color.a);
		glBegin(GL_LINE_LOOP);
		glVertex2i(rect.x, rect.y);
		glVertex2i(rect.x, rect.y+rect.w);
		glVertex2i(rect.x+rect.z, rect.y+rect.w);
		glVertex2i(rect.x+rect.z, rect.y);
		glEnd();
	}

	void DrawRect(const Vector4& rect, const Color* colors)
	{
		Renderer::SetState(RENDER_BLEND);
		glBegin(GL_LINES);
		glColor4ub(colors[0].r, colors[0].g, colors[0].b, colors[0].a);
		glVertex2i(rect.x, rect.y);
		glVertex2i(rect.x, rect.y+rect.w);
		glColor4ub(colors[1].r, colors[1].g, colors[1].b, colors[1].a);
		glVertex2i(rect.x, rect.y+rect.w);
		glVertex2i(rect.x+rect.z, rect.y+rect.w);
		glColor4ub(colors[2].r, colors[2].g, colors[2].b, colors[2].a);
		glVertex2i(rect.x+rect.z, rect.y+rect.w);
		glVertex2i(rect.x+rect.z, rect.y);
		glColor4ub(colors[3].r, colors[3].g, colors[3].b, colors[3].a);
		glVertex2i(rect.x+rect.z, rect.y);
		glVertex2i(rect.x, rect.y);
		glEnd();
	}

	void FillRect(const Vector4& rect, const Color& color)
	{
		Renderer::SetState(RENDER_BLEND | RENDER_FILL);
		glColor4ub(color.r, color.g, color.b, color.a);
		glBegin(GL_QUADS);
		glVertex2i(rect.x, rect.y);
		glVertex2i(rect.x, rect.y+rect.w);
		glVertex2i(rect.x+rect.z, rect.y+rect.w);
		glVertex2i(rect.x+rect.z, rect.y);
		glEnd();
	}

	void FillRect(const Vector4& rect, const Color* colors)
	{
		Renderer::SetState(RENDER_BLEND | RENDER_FILL);
		glBegin(GL_QUADS);
		glColor4ub(colors[0].r, colors[0].g, colors[0].b, colors[0].a);
		glVertex2i(rect.x, rect.y);
		glColor4ub(colors[1].r, colors[1].g, colors[1].b, colors[1].a);
		glVertex2i(rect.x, rect.y+rect.w);
		glColor4ub(colors[2].r, colors[2].g, colors[2].b, colors[2].a);
		glVertex2i(rect.x+rect.z, rect.y+rect.w);
		glColor4ub(colors[3].r, colors[3].g, colors[3].b, colors[3].a);
		glVertex2i(rect.x+rect.z, rect.y);
		glEnd();
	}
}