/**
* @brief Scroll vertically a section of the screen.
* @note Optional.
* @note If x,y + cx,cy is off the screen, the result is undefined.
* @note If lines is >= cy, it is equivelent to a area fill with bgcolor.
*
* @param[in] x, y The start of the area to be scrolled
* @param[in] cx, cy The size of the area to be scrolled
* @param[in] lines The number of lines to scroll (Can be positive or negative)
* @param[in] bgcolor The color to fill the newly exposed area.
*
* @notapi
*/
void GDISP_LLD(verticalscroll)(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) {
/* This is marked as "TODO: Test this" in the original GLCD driver.
* For now we just leave the GDISP_HARDWARE_SCROLL off.
*/
static color_t buf[((SCREEN_HEIGHT > SCREEN_WIDTH ) ? SCREEN_HEIGHT : SCREEN_WIDTH)];
coord_t row0, row1;
unsigned i, gap, abslines;
abslines = lines < 0 ? -lines : lines;
#if GDISP_NEED_VALIDATION
if (cx < 1 || cy < 1 || x >= GDISP.Width || y >= GDISP.Height) return;
if (x+cx > GDISP.Width) cx = GDISP.Width - x;
if (y+cy > GDISP.Height) cy = GDISP.Height - y;
#endif
if (!abslines) return;
if (abslines >= cy) {
abslines = cy;
gap = 0;
} else {
gap = cy - abslines;
for(i = 0; i < gap; i++) {
if(lines > 0) {
row0 = y + i + lines;
row1 = y + i;
} else {
row0 = (y - i - 1) + lines;
row1 = (y - i - 1);
}
/* read row0 into the buffer and then write at row1*/
lld_lcdSetViewPort(x, row0, cx, 1);
lld_lcdReadStreamStart();
lld_lcdReadStream(buf, cx);
lld_lcdReadStreamStop();
lld_lcdSetViewPort(x, row1, cx, 1);
lld_lcdWriteStreamStart();
lld_lcdWriteStream(buf, cx);
lld_lcdWriteStreamStop();
}
}
/* fill the remaining gap */
lld_lcdSetViewPort(x, lines > 0 ? (y+gap) : y, cx, abslines);
lld_lcdWriteStreamStart();
gap = cx*abslines;
for(i = 0; i < gap; i++) lld_lcdWriteData(bgcolor);
lld_lcdWriteStreamStop();
lld_lcdResetViewPort();
}
/**
* @brief Scroll vertically a section of the screen.
* @note Optional.
* @note If x,y + cx,cy is off the screen, the result is undefined.
* @note If lines is >= cy, it is equivelent to a area fill with bgcolor.
*
* @param[in] x, y The start of the area to be scrolled
* @param[in] cx, cy The size of the area to be scrolled
* @param[in] lines The number of lines to scroll (Can be positive or negative)
* @param[in] bgcolor The color to fill the newly exposed area.
*
* @notapi
*/
void GDISP_LLD(verticalscroll)(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) {
static color_t buf[((SCREEN_HEIGHT > SCREEN_WIDTH ) ? SCREEN_HEIGHT : SCREEN_WIDTH)];
coord_t row0, row1;
unsigned i, gap, abslines;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; }
if (!lines || cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
abslines = lines < 0 ? -lines : lines;
if (abslines >= cy) {
abslines = cy;
gap = 0;
} else {
gap = cy - abslines;
for(i = 0; i < gap; i++) {
if(lines > 0) {
row0 = y + i + lines;
row1 = y + i;
} else {
row0 = (y - i - 1) + lines;
row1 = (y - i - 1);
}
/* read row0 into the buffer and then write at row1*/
lld_lcdSetViewPort(x, row0, cx, 1);
lld_lcdReadStreamStart();
lld_lcdReadStream(buf, cx);
lld_lcdReadStreamStop();
lld_lcdSetViewPort(x, row1, cx, 1);
lld_lcdWriteStreamStart();
lld_lcdWriteStream(buf, cx);
lld_lcdWriteStreamStop();
}
}
/* fill the remaining gap */
lld_lcdSetViewPort(x, lines > 0 ? (y+gap) : y, cx, abslines);
lld_lcdWriteStreamStart();
gap = cx*abslines;
for(i = 0; i < gap; i++) lld_lcdWriteData(bgcolor);
lld_lcdWriteStreamStop();
lld_lcdResetViewPort();
}
/**
* @brief Fill an area with a bitmap.
* @note Optional - The high level driver can emulate using software.
*
* @param[in] x, y The start filled area
* @param[in] cx, cy The width and height to be filled
* @param[in] srcx, srcy The bitmap position to start the fill from
* @param[in] srccx The width of a line in the bitmap.
* @param[in] buffer The pixels to use to fill the area.
*
* @notapi
*/
void GDISP_LLD(blitareaex)(coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t srcx, coord_t srcy, coord_t srccx, const pixel_t *buffer) {
coord_t endx, endy;
unsigned lg;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; srcx += GDISP.clipx0 - x; x = GDISP.clipx0; }
if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; srcy += GDISP.clipy0 - y; y = GDISP.clipy0; }
if (srcx+cx > srccx) cx = srccx - srcx;
if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
lld_lcdSetViewPort(x, y, cx, cy);
lld_lcdWriteStreamStart();
endx = srcx + cx;
endy = y + cy;
lg = srccx - cx;
buffer += srcx + srcy * srccx;
for(; y < endy; y++, buffer += lg)
for(x=srcx; x < endx; x++)
lld_lcdWriteData(*buffer++);
lld_lcdWriteStreamStop();
lld_lcdResetViewPort();
}
/**
* @brief Clear the display.
* @note Optional - The high level driver can emulate using software.
*
* @param[in] color The color of the pixel
*
* @notapi
*/
void GDISP_LLD(clear)(color_t color) {
unsigned i;
lld_lcdSetCursor(0, 0);
lld_lcdWriteStreamStart();
for(i = 0; i < SCREEN_WIDTH * SCREEN_HEIGHT; i++)
lld_lcdWriteData(color);
lld_lcdWriteStreamStop();
}
void gdisp_lld_clear(color_t color) {
unsigned i;
lld_lcdSetCursor(0, 0);
lld_lcdWriteStreamStart();
for(i = 0; i < GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT; i++)
lld_lcdWriteData(color);
lld_lcdWriteStreamStop();
}
/**
* @brief Get the color of a particular pixel.
* @note Optional.
* @note If x,y is off the screen, the result is undefined.
*
* @param[in] x, y The start of the text
*
* @notapi
*/
color_t GDISP_LLD(getpixelcolor)(coord_t x, coord_t y) {
color_t color;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < 0 || x >= GDISP.Width || y < 0 || y >= GDISP.Height) return 0;
#endif
lld_lcdSetCursor(x, y);
lld_lcdWriteStreamStart();
color = lld_lcdReadData();
color = lld_lcdReadData();
lld_lcdWriteStreamStop();
return color;
}
/**
* @brief Fill an area with a color.
* @note Optional - The high level driver can emulate using software.
*
* @param[in] x, y The start filled area
* @param[in] cx, cy The width and height to be filled
* @param[in] color The color of the fill
*
* @notapi
*/
void GDISP_LLD(fillarea)(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; }
if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
unsigned i, area;
area = cx*cy;
lld_lcdSetViewPort(x, y, cx, cy);
lld_lcdWriteStreamStart();
for(i = 0; i < area; i++)
lld_lcdWriteData(color);
lld_lcdWriteStreamStop();
lld_lcdResetViewPort();
}
/**
* @brief Get the color of a particular pixel.
* @note Optional.
* @note If x,y is off the screen, the result is undefined.
*
* @param[in] x, y The start of the text
*
* @notapi
*/
color_t GDISP_LLD(getpixelcolor)(coord_t x, coord_t y) {
/* This routine is marked "DO NOT USE" in the original
* GLCD driver. We just keep our GDISP_HARDWARE_READPIXEL
* turned off for now.
*/
color_t color;
#if GDISP_NEED_VALIDATION
if (x >= GDISP.Width || y >= GDISP.Height) return 0;
#endif
lld_lcdSetCursor(x, y);
lld_lcdWriteStreamStart();
color = lld_lcdReadData();
color = lld_lcdReadData();
lld_lcdWriteStreamStop();
return color;
}