usbloadergx/source/libwiigui/gui_box.cpp

/****************************************************************************
 * Copyright (C) 2010
 * by Dimok
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any
 * damages arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any
 * purpose, including commercial applications, and to alter it and
 * redistribute it freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you
 * must not claim that you wrote the original software. If you use
 * this software in a product, an acknowledgment in the product
 * documentation would be appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and
 * must not be misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source
 * distribution.
 ***************************************************************************/
#include "gui_box.hpp"

void GuiBox::Draw()
{
    GX_SetTevOp(GX_TEVSTAGE0, GX_PASSCLR);
    GX_SetVtxDesc(GX_VA_POS, GX_DIRECT);
    GX_SetVtxDesc(GX_VA_CLR0, GX_DIRECT);
    GX_SetVtxDesc(GX_VA_TEX0, GX_NONE);
    u32 n = filled ? 4 : 5;
    f32 x = GetLeft();
    f32 y = GetTop();
    f32 x2 = x + width;
    f32 y2 = y + height;
    guVector v[] = { { x, y, 0.0f }, { x2, y, 0.0f }, { x2, y2, 0.0f }, { x, y2, 0.0f }, { x, y, 0.0f } };

    int alpha = GetAlpha();

    GX_Begin(filled ? GX_TRIANGLEFAN : GX_LINESTRIP, GX_VTXFMT0, n);
    for (u32 i = 0; i < n; i++)
    {
        GX_Position3f32(v[i].x, v[i].y, v[i].z);
        GX_Color4u8(color[i].r, color[i].g, color[i].b, alpha);
    }
    GX_End();
    GX_SetTevOp(GX_TEVSTAGE0, GX_MODULATE);
}