guigraphics.c

这个是boot gui的程序

/*
 *  Start of Zoran Standard Header
 *  Copyright (c) 2005 Zoran Corporation
 *  
 *  
 *  All rights reserved.  Proprietary and confidential.
 *  
 *  DESCRIPTION for guigraphics.c
 *      Miscellaneous GUI graphics routines
 *  
 *  NEW HISTORY COMMENT (description must be followed by a blank line)
 *  <Enter change description here>

 *  ===== HISTORY of changes in //depot/imgeng/sw/se_gw/gui/guigraphics.c
 *  
 *  15/Dec/05 #7  dstrauss  Added GUIDisplayYUVImage().
 *  13/Dec/05 #6  dstrauss  Added GUITextWidth(), GuiTextHeight(), 
 *                          and GUIEraseRectangle().
 *  12/Dec/05 #5  dstrauss  Deleted uiwindows.h
 *  12/Dec/05 #4  dstrauss  Allow the cursor to be "normal", "modified", 
 *                          or "erase" color.
 *   9/Dec/05 #3  dstrauss  Added GUIStatusText().
 *   6/Dec/05 #2  dstrauss  Added GUICursorBox(); allow GUIText to "erase" 
 *                          text.
 *   5/Dec/05 #1  dstrauss  Created.
 *  
 *
 *  End of Zoran Standard Header
 */
#include "standard.h"
#include "guigraphics.h"
#include "vopu.h"

#include "uitypes.h"
#include "uigdi.h"
#include "splashlogo.h"

/* Background color for the "main" screen */
#define BACKGROUND_COLOR (RGB(0xff,0xff,0xff))

/* Background color for the "status" area */
#define STATUS_BACKGROUND (RGB(0xc0, 0xc0, 0xc0))

/* Cursor-box color */
#define CURSOR_COLOR (RGB(0xff,0xff,0))

/* Cursor-box color when the display value has been modified */
#define CURSOR_MODIFIED_COLOR (RGB(0xff,0,0))

extern FONTINFO g_biuFont0;

extern PGDIDRVR LCDRGBDriverInit(void);
extern PGDIDRVR LCDYUVDriverInit(void);

PGDIDRVR guiRGBDriver;
PGDIDRVR guiYUVDriver;

static void paintStatusBackground(void)
{
  GDIrect(guiRGBDriver,0, (VopuHeight() - 38), VopuWidth(), 38, 
          STATUS_BACKGROUND);
}


/* paint the standard screen background */
void GUIPaintBackground(void)
{
  GDIsetBkg(guiRGBDriver, BACKGROUND_COLOR); /* set opaque background */
  /* fill the display with the background */
  GDIrect(guiRGBDriver, 0, 0, VopuWidth(), VopuHeight(), BACKGROUND_COLOR);
  paintStatusBackground();
}

/* paint the logo at a specified location */
void GUIPaintLogo(int x, int y)
{
  COLORREF oldBackground;
  /* save current background, then set transparent background */
  oldBackground = GDIgetBkg(guiRGBDriver);
  GDIsetBkg(guiRGBDriver, 0xff000000 | RGB(0xff, 0xff, 0xff));

  GDIimage(guiRGBDriver, x, y,
           g_SplashLogo.m_w, g_SplashLogo.m_h,
           g_SplashLogo.m_bits, 
           g_SplashLogo.m_c == icRLE, 
           g_SplashLogo.m_w, g_SplashLogo.m_h, 
           g_SplashLogo.m_s);

  GDIsetBkg(guiRGBDriver, oldBackground); /* restore original background */
}

/* initialization -- init our graphics setup */
void GUIinitGraphics(void)
{
  /* we initialize two drivers for the LCD; each one expects
   * a different format for the source data
   */
  if (LCDinitialize()) {
    guiRGBDriver = LCDRGBDriverInit();
    guiYUVDriver = LCDYUVDriverInit();
  }

  GDIinstallFont(guiRGBDriver, 0, &g_biuFont0);
  GDIsetFont(guiRGBDriver, 0);
}

/* draw a text string at x,y.  If "erase" is true, draw 
 * in the main menu background color (which "erases" the text).
 */
void GUIText(int x, int y, const char *text, int erase)
{
  COLORREF oldBackground;
  COLORREF textColor;
  
  if (erase) {
    textColor = BACKGROUND_COLOR;
  } else {
    textColor = RGB(0,0,0);
  }

  /* save current background, then set transparent background */
  oldBackground = GDIgetBkg(guiRGBDriver);
  GDIsetBkg(guiRGBDriver, 0xff000000 | BACKGROUND_COLOR);

  GDItext(guiRGBDriver, x, y, 100, 100, (char *)text, textColor);

  GDIsetBkg(guiRGBDriver, oldBackground); /* restore original background */
}


/* draw a cursor outline at location x,y in the color specified by "color"
 */
void GUICursorBox(int x, int y, int xlen, int ylen, eCursorColor color)
{
  COLORREF boxColor;
  
  switch (color) {
  default:
  case eCCNormal:
    boxColor = CURSOR_COLOR;
    break;
  case eCCModified:
    boxColor = CURSOR_MODIFIED_COLOR;
    break;
  case eCCErase:
    boxColor = BACKGROUND_COLOR;
    break;
  }
  GDIrect(guiRGBDriver, x, y, xlen, 2, boxColor);
  GDIrect(guiRGBDriver, x + xlen, y , 2, ylen, boxColor);
  GDIrect(guiRGBDriver, x, y, 2, ylen, boxColor);
  GDIrect(guiRGBDriver, x, y + ylen, xlen, 2, boxColor);
}

/*  draw text in the status box.
 */
void GUIStatusText(const char *text)
{
  COLORREF oldBackground;
  
  paintStatusBackground();      /* paint the status area */

  /* save current background, then set transparent background */
  oldBackground = GDIgetBkg(guiRGBDriver);
  GDIsetBkg(guiRGBDriver, 0xff000000 | STATUS_BACKGROUND);

  GDItext(guiRGBDriver, 4, (VopuHeight() - 38), 
          100, 100, (char *)text, RGB(0,0,0));

  GDIsetBkg(guiRGBDriver, oldBackground); /* restore original background */
}

int GUITextWidth(const char *text)
{
  return GDItextWidth(guiRGBDriver, (char *)text);
}

int GUITextHeight(const char *text)
{
  return GDItextHeight(guiRGBDriver, (char *)text);
}

void GUIEraseRectangle(int x, int y, int w, int h)
{
  GDIrect(guiRGBDriver, x, y, w, h, BACKGROUND_COLOR);
}

/* Display a YUV-encoded line-interleaved image.
 * Scale the height by 2/3 to adjust for non-square
 * pixels on the LCD.
 */
void GUIDisplayYUVImage(int x, int y, int w, int h, unsigned char* src) 
{
  GDIimage(guiYUVDriver, x, y, w, (h * 2)/3, src, FALSE, w, h, w * 3);
}