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/* ----------------------------------------------------------------------------

 *         ATMEL Microcontroller Software Support

 * ----------------------------------------------------------------------------

 * Copyright (c) 2008, Atmel Corporation

 *

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * - Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the disclaimer below.

 *

 * Atmel's name may not be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE

 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,

 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 * ----------------------------------------------------------------------------

 */

//------------------------------------------------------------------------------

//         Headers

//------------------------------------------------------------------------------

#include "draw.h"

#include "font.h"

#include <board.h>

#include <utility/assert.h>

#include <hx8347/hx8347.h>

#include <string.h>

//------------------------------------------------------------------------------

//         Global functions

//------------------------------------------------------------------------------

//------------------------------------------------------------------------------

/// Fills the given LCD buffer with a particular color.

/// Only works in 24-bits packed mode for now.

/// \param pBuffer  LCD buffer to fill.

/// \param color  Fill color.

//------------------------------------------------------------------------------

void LCDD_Fill(void *pBuffer, unsigned int color)

{

    unsigned int i;

    unsigned short color16 = RGB24ToRGB16(color);

    LCD_SetCursor((void *)BOARD_LCD_BASE, 0, 0);

    LCD_WriteRAM_Prepare((void *)BOARD_LCD_BASE);

    for (i = 0; i < (BOARD_LCD_WIDTH * BOARD_LCD_HEIGHT); i++) {

        LCD_WriteRAM((void *)BOARD_LCD_BASE, color16);

    }

}

//------------------------------------------------------------------------------

/// Sets the specified pixel to the given color.

/// !!! Only works in 24-bits packed mode for now. !!!

/// \param pBuffer  LCD buffer to draw on.

/// \param x  X-coordinate of pixel.

/// \param y  Y-coordinate of pixel.

/// \param color  Pixel color.

//------------------------------------------------------------------------------

void LCDD_DrawPixel(

    void *pBuffer,

    unsigned int x,

    unsigned int y,

    unsigned int color)

{

    unsigned short color16 = RGB24ToRGB16(color);

    LCD_SetCursor(pBuffer, x, y);

    LCD_WriteRAM_Prepare(pBuffer);

    LCD_WriteRAM(pBuffer, color16);

}

//------------------------------------------------------------------------------

/// Draws a rectangle inside a LCD buffer, at the given coordinates.

/// \param pBuffer  LCD buffer to draw on.

/// \param x  X-coordinate of upper-left rectangle corner.

/// \param y  Y-coordinate of upper-left rectangle corner.

/// \param width  Rectangle width in pixels.

/// \param height  Rectangle height in pixels.

/// \param color  Rectangle color.

//------------------------------------------------------------------------------

void LCDD_DrawRectangle(

    void *pBuffer,

    unsigned int x,

    unsigned int y,

    unsigned int width,

    unsigned int height,

    unsigned int color)

{

    unsigned int rx, ry;

    for (ry=0; ry < height; ry++) {

        for (rx=0; rx < width; rx++) {

            LCDD_DrawPixel(pBuffer, x+rx, y+ry, color);

        }

    }

}

//------------------------------------------------------------------------------

/// Draws a string inside a LCD buffer, at the given coordinates. Line breaks

/// will be honored.

/// \param pBuffer  Buffer to draw on.

/// \param x  X-coordinate of string top-left corner.

/// \param y  Y-coordinate of string top-left corner.

/// \param pString  String to display.

/// \param color  String color.

//------------------------------------------------------------------------------

void LCDD_DrawString(

    void *pBuffer,

    unsigned int x,

    unsigned int y,

    const char *pString,

    unsigned int color)

{

    unsigned xorg = x;

    while (*pString != 0) {

        if (*pString == '\n') {

            y += gFont.height + 2;

            x = xorg;

        }

        else {

            LCDD_DrawChar(pBuffer, x, y, *pString, color);

            x += gFont.width + 2;

        }

        pString++;

    }

}

//------------------------------------------------------------------------------

/// Returns the width & height in pixels that a string will occupy on the screen

/// if drawn using LCDD_DrawString.

/// \param pString  String.

/// \param pWidth  Pointer for storing the string width (optional).

/// \param pHeight  Pointer for storing the string height (optional).

/// \return String width in pixels.

//------------------------------------------------------------------------------

void LCDD_GetStringSize(

    const char *pString,

    unsigned int *pWidth,

    unsigned int *pHeight)

{

    unsigned int width = 0;

    unsigned int height = gFont.height;

    while (*pString != 0) {

        if (*pString == '\n') {

            height += gFont.height + 2;

        }

        else {

            width += gFont.width + 2;

        }

        pString++;

    }

    if (width > 0) width -= 2;

    if (pWidth) *pWidth = width;

    if (pHeight) *pHeight = height;

}