//*****************************************************************************
//
// A simple demonstration of the features of the TivaWare Graphics Library.
//
//*****************************************************************************
int
main(void)
{
uint32_t ui32Idx;
tRectangle sRect;
//
// Enable lazy stacking for interrupt handlers. This allows floating-point
// instructions to be used within interrupt handlers, but at the expense of
// extra stack usage.
//
ROM_FPULazyStackingEnable();
//
// Set the clocking to run from the PLL.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_XTAL_16MHZ |
SYSCTL_OSC_MAIN);
//
// Initialize the display driver.
//
CFAL96x64x16Init();
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sCFAL96x64x16);
//
// Fill the top 12 rows of the screen with blue to create the banner.
//
sRect.i16XMin = 0;
sRect.i16YMin = 0;
sRect.i16XMax = GrContextDpyWidthGet(&g_sContext) - 1;
sRect.i16YMax = 11;
GrContextForegroundSet(&g_sContext, ClrDarkBlue);
GrRectFill(&g_sContext, &sRect);
//
// Put a white box around the banner.
//
GrContextForegroundSet(&g_sContext, ClrWhite);
GrRectDraw(&g_sContext, &sRect);
//
// Put the application name in the middle of the banner.
//
GrContextFontSet(&g_sContext, g_psFontFixed6x8);
GrStringDrawCentered(&g_sContext, "grlib_demo", -1,
GrContextDpyWidthGet(&g_sContext) / 2, 5, 0);
//
// Draw a vertical sweep of lines from red to green.
//
for(ui32Idx = 0; ui32Idx <= 8; ui32Idx++)
{
GrContextForegroundSet(&g_sContext,
(((((10 - ui32Idx) * 255) / 8) << ClrRedShift) |
(((ui32Idx * 255) / 8) << ClrGreenShift)));
GrLineDraw(&g_sContext, 60, 60, 0, 60 - (5 * ui32Idx));
}
//
// Draw a horizontal sweep of lines from green to blue.
//
for(ui32Idx = 1; ui32Idx <= 11; ui32Idx++)
{
GrContextForegroundSet(&g_sContext,
(((((11 - ui32Idx) * 255) / 11) <<
ClrGreenShift) |
(((ui32Idx * 255) / 11) << ClrBlueShift)));
GrLineDraw(&g_sContext, 60, 60, (ui32Idx * 5), 20);
}
//
// Draw a filled circle with an overlapping circle.
//
GrContextForegroundSet(&g_sContext, ClrBlue);
GrCircleFill(&g_sContext, 80, 30, 15);
GrContextForegroundSet(&g_sContext, ClrWhite);
GrCircleDraw(&g_sContext, 80, 30, 15);
//
// Draw a filled rectangle with an overlapping rectangle.
//
GrContextForegroundSet(&g_sContext, ClrGray);
sRect.i16XMin = 8;
sRect.i16YMin = 45;
sRect.i16XMax = 46;
sRect.i16YMax = 51;
GrRectFill(&g_sContext, &sRect);
GrContextForegroundSet(&g_sContext, ClrWhite);
sRect.i16XMin += 4;
sRect.i16YMin += 4;
sRect.i16XMax += 4;
sRect.i16YMax += 4;
GrRectDraw(&g_sContext, &sRect);
//
// Draw a piece of text in fonts of increasing size.
//
GrContextForegroundSet(&g_sContext, ClrBlack);
GrStringDraw(&g_sContext, "Strings", -1, 6, 16, 0);
GrContextForegroundSet(&g_sContext, ClrSilver);
GrStringDraw(&g_sContext, "Strings", -1, 7, 17, 0);
//
// Draw an image.
//
GrTransparentImageDraw(&g_sContext, g_pui8Logo, 64, 34, ClrBlack);
#if 0
GrImageDraw(&g_sContext, g_pui8Logo, 64, 34);
#endif
//
// Flush any cached drawing operations.
//
GrFlush(&g_sContext);
//
// Loop forever.
//
while(1)
{
}
}
//*****************************************************************************
//
// Draw the pop up buttons on the screen.
//
//*****************************************************************************
static void
DrawButtons(int32_t i32Offset, bool bClear)
{
static const tRectangle sRectTop = {
140,
BG_MIN_Y,
171,
BG_MIN_Y + 10,
};
static const tRectangle sRectRight = {
BG_MAX_X - 11,
BG_MIN_Y - 20 + ((BG_MAX_Y - BG_MIN_Y) / 2),
BG_MAX_X,
BG_MIN_Y - 20 + ((BG_MAX_Y - BG_MIN_Y) / 2) + 40,
};
static const tRectangle sRectLeft = {
BG_MIN_X,
BG_MIN_Y - 20 + ((BG_MAX_Y - BG_MIN_Y) / 2),
BG_MIN_X + 10,
BG_MIN_Y - 20 + ((BG_MAX_Y - BG_MIN_Y) / 2) + 40,
};
//
// Only draw if they are enabled.
//
if(g_sButtons.bEnabled == false) {
return;
}
//
// Draw the three pop up buttons.
//
if(g_i32ScreenIdx == SCREEN_SUMMARY || g_i32ScreenIdx == SCREEN_DETAILS) {
GrContextForegroundSet(&g_sContext, ClrBlack);
GrContextBackgroundSet(&g_sContext, ClrGray);
GrRectFill(&g_sContext, &sRectRight);
GrRectFill(&g_sContext, &sRectLeft);
if(bClear == false) {
GrLineDrawH(&g_sContext, 140, 171, BG_MIN_Y + 10 + i32Offset);
GrImageDraw(&g_sContext, g_pui8DownTabImage, 140,
BG_MIN_Y + i32Offset);
GrTransparentImageDraw(&g_sContext, g_pui8RightImage,
BG_MAX_X - 10 + i32Offset,
BG_MIN_Y - 20 + ((BG_MAX_Y - BG_MIN_Y) / 2),
1);
GrTransparentImageDraw(&g_sContext, g_pui8LeftImage,
BG_MIN_X - i32Offset,
BG_MIN_Y - 20 + ((BG_MAX_Y - BG_MIN_Y) / 2),
1);
} else {
GrRectFill(&g_sContext, &sRectTop);
}
} else if(g_i32ScreenIdx == SCREEN_TI) {
GrContextForegroundSet(&g_sContext, ClrGray);
GrContextBackgroundSet(&g_sContext, ClrWhite);
if(bClear == false) {
GrLineDrawH(&g_sContext, 140, 171, BG_MAX_Y - 11 - i32Offset);
GrImageDraw(&g_sContext, g_pui8UpTabImage, 140,
BG_MAX_Y - 10 - i32Offset);
}
}
}