+/**************************************************************************/
+/*!
+ @file drawing.c
+ @author K. Townsend (microBuilder.eu)
+
+ drawLine and drawCircle adapted from a tutorial by Leonard McMillan:
+ http://www.cs.unc.edu/~mcmillan/
+
+ drawString based on an example from Eran Duchan:
+ http://www.pavius.net/downloads/tools/53-the-dot-factory
+
+ @section LICENSE
+
+ Software License Agreement (BSD License)
+
+ Copyright (c) 2010, microBuilder SARL
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the copyright holders nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+ EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.
+*/
+/**************************************************************************/
+#include <string.h>
+
+#include "drawing.h"
+
+#ifdef CFG_SDCARD
+ #include "bmp.h"
+#endif
+
+/**************************************************************************/
+/* */
+/* ----------------------- Private Methods ------------------------------ */
+/* */
+/**************************************************************************/
+
+/**************************************************************************/
+/*!
+ @brief Swaps values a and b
+*/
+/**************************************************************************/
+void drawSwap(uint32_t a, uint32_t b)
+{
+ uint32_t t;
+ t = a;
+ a = b;
+ b = t;
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a single bitmap character
+*/
+/**************************************************************************/
+void drawCharBitmap(const uint16_t xPixel, const uint16_t yPixel, uint16_t color, const char *glyph, uint8_t cols, uint8_t rows)
+{
+ uint16_t currentY, currentX, indexIntoGlyph;
+ uint16_t _row, _col, _colPages;
+
+ // set initial current y
+ currentY = yPixel;
+ currentX = xPixel;
+
+ // Figure out how many columns worth of data we have
+ if (cols % 8)
+ _colPages = cols / 8 + 1;
+ else
+ _colPages = cols / 8;
+
+ for (_row = 0; _row < rows; _row++)
+ {
+ for (_col = 0; _col < _colPages; _col++)
+ {
+ if (_row == 0)
+ indexIntoGlyph = _col;
+ else
+ indexIntoGlyph = (_row * _colPages) + _col;
+
+ currentY = yPixel + _row;
+ currentX = xPixel + (_col*8);
+ // send the data byte
+ if (glyph[indexIntoGlyph] & (0X80)) drawPixel(currentX, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X40)) drawPixel(currentX+1, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X20)) drawPixel(currentX+2, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X10)) drawPixel(currentX+3, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X08)) drawPixel(currentX+4, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X04)) drawPixel(currentX+5, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X02)) drawPixel(currentX+6, currentY, color);
+ if (glyph[indexIntoGlyph] & (0X01)) drawPixel(currentX+7, currentY, color);
+ }
+ }
+}
+
+#if defined CFG_TFTLCD_INCLUDESMALLFONTS & CFG_TFTLCD_INCLUDESMALLFONTS == 1
+/**************************************************************************/
+/*!
+ @brief Draws a single smallfont character
+*/
+/**************************************************************************/
+void drawCharSmall(uint16_t x, uint16_t y, uint16_t color, uint8_t c, struct FONT_DEF font)
+{
+ uint8_t col, column[font.u8Width];
+
+ // Check if the requested character is available
+ if ((c >= font.u8FirstChar) && (c <= font.u8LastChar))
+ {
+ // Retrieve appropriate columns from font data
+ for (col = 0; col < font.u8Width; col++)
+ {
+ column[col] = font.au8FontTable[((c - 32) * font.u8Width) + col]; // Get first column of appropriate character
+ }
+ }
+ else
+ {
+ // Requested character is not available in this font ... send a space instead
+ for (col = 0; col < font.u8Width; col++)
+ {
+ column[col] = 0xFF; // Send solid space
+ }
+ }
+
+ // Render each column
+ uint16_t xoffset, yoffset;
+ for (xoffset = 0; xoffset < font.u8Width; xoffset++)
+ {
+ for (yoffset = 0; yoffset < (font.u8Height + 1); yoffset++)
+ {
+ uint8_t bit = 0x00;
+ bit = (column[xoffset] << (8 - (yoffset + 1))); // Shift current row bit left
+ bit = (bit >> 7); // Shift current row but right (results in 0x01 for black, and 0x00 for white)
+ if (bit)
+ {
+ drawPixel(x + xoffset, y + yoffset, color);
+ }
+ }
+ }
+}
+#endif
+
+/**************************************************************************/
+/*!
+ @brief Helper method to accurately draw individual circle points
+*/
+/**************************************************************************/
+void drawCirclePoints(int cx, int cy, int x, int y, uint16_t color)
+{
+ if (x == 0)
+ {
+ drawPixel(cx, cy + y, color);
+ drawPixel(cx, cy - y, color);
+ drawPixel(cx + y, cy, color);
+ drawPixel(cx - y, cy, color);
+ }
+ else if (x == y)
+ {
+ drawPixel(cx + x, cy + y, color);
+ drawPixel(cx - x, cy + y, color);
+ drawPixel(cx + x, cy - y, color);
+ drawPixel(cx - x, cy - y, color);
+ }
+ else if (x < y)
+ {
+ drawPixel(cx + x, cy + y, color);
+ drawPixel(cx - x, cy + y, color);
+ drawPixel(cx + x, cy - y, color);
+ drawPixel(cx - x, cy - y, color);
+ drawPixel(cx + y, cy + x, color);
+ drawPixel(cx - y, cy + x, color);
+ drawPixel(cx + y, cy - x, color);
+ drawPixel(cx - y, cy - x, color);
+ }
+}
+
+/**************************************************************************/
+/* */
+/* ----------------------- Public Methods ------------------------------- */
+/* */
+/**************************************************************************/
+
+/**************************************************************************/
+/*!
+ @brief Draws a single pixel at the specified location
+
+ @param[in] x
+ Horizontal position
+ @param[in] y
+ Vertical position
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawPixel(uint16_t x, uint16_t y, uint16_t color)
+{
+ if ((x >= lcdGetWidth()) || (y >= lcdGetHeight()))
+ {
+ // Pixel out of range
+ return;
+ }
+
+ // Redirect to LCD
+ lcdDrawPixel(x, y, color);
+}
+
+/**************************************************************************/
+/*!
+ @brief Fills the screen with the specified color
+
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawFill(uint16_t color)
+{
+ lcdFillRGB(color);
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a simple color test pattern
+*/
+/**************************************************************************/
+void drawTestPattern(void)
+{
+ lcdTest();
+}
+
+#if defined CFG_TFTLCD_INCLUDESMALLFONTS & CFG_TFTLCD_INCLUDESMALLFONTS == 1
+/**************************************************************************/
+/*!
+ @brief Draws a string using a small font (6 of 8 pixels high).
+
+ @param[in] x
+ Starting x co-ordinate
+ @param[in] y
+ Starting y co-ordinate
+ @param[in] color
+ Color to use when rendering the font
+ @param[in] text
+ The string to render
+ @param[in] font
+ Pointer to the FONT_DEF to use when drawing the string
+
+ @section Example
+
+ @code
+
+ #include "drivers/displays/fonts/smallfonts.h"
+
+ drawStringSmall(1, 210, COLOR_WHITE, "5x8 System (Max 40 Characters)", Font_System5x8);
+ drawStringSmall(1, 220, COLOR_WHITE, "7x8 System (Max 30 Characters)", Font_System7x8);
+
+ @endcode
+*/
+/**************************************************************************/
+void drawStringSmall(uint16_t x, uint16_t y, uint16_t color, char* text, struct FONT_DEF font)
+{
+ uint8_t l;
+ for (l = 0; l < strlen(text); l++)
+ {
+ drawCharSmall(x + (l * (font.u8Width + 1)), y, color, text[l], font);
+ }
+}
+#endif
+
+/**************************************************************************/
+/*!
+ @brief Draws a string using the supplied font
+
+ @param[in] x
+ Starting x co-ordinate
+ @param[in] y
+ Starting y co-ordinate
+ @param[in] color
+ Color to use when rendering the font
+ @param[in] fontInfo
+ Pointer to the FONT_INFO to use when drawing the string
+ @param[in] str
+ The string to render
+
+ @section Example
+
+ @code
+
+ #include "drivers/displays/tft/fonts/dejavusans9.h"
+
+ drawString(0, 90, COLOR_BLACK, &dejaVuSans9ptFontInfo, "DejaVu Sans 9");
+ drawString(0, 105, COLOR_BLACK, &dejaVuSans9ptFontInfo, "123456789012345678901234567890");
+
+ @endcode
+*/
+/**************************************************************************/
+void drawString(uint16_t x, uint16_t y, uint16_t color, const FONT_INFO *fontInfo, char *str)
+{
+ uint16_t currentX, charWidth, characterToOutput;
+ const FONT_CHAR_INFO *charInfo;
+ uint16_t charOffset;
+
+ // set current x, y to that of requested
+ currentX = x;
+
+ // while not NULL
+ while (*str != '\0')
+ {
+ // get character to output
+ characterToOutput = *str;
+
+ // get char info
+ charInfo = fontInfo->charInfo;
+
+ // some fonts have character descriptors, some don't
+ if (charInfo != NULL)
+ {
+ // get correct char offset
+ charInfo += (characterToOutput - fontInfo->startChar);
+
+ // get width from char info
+ charWidth = charInfo->widthBits;
+
+ // get offset from char info
+ charOffset = charInfo->offset;
+ }
+ else
+ {
+ // if no char info, char width is always 5
+ charWidth = 5;
+
+ // char offset - assume 5 * letter offset
+ charOffset = (characterToOutput - fontInfo->startChar) * 5;
+ }
+
+ // Send individual characters
+ // We need to manually calculate width in pages since this is screwy with variable width fonts
+ //uint8_t heightPages = charWidth % 8 ? charWidth / 8 : charWidth / 8 + 1;
+ drawCharBitmap(currentX, y, color, (const char *)(&fontInfo->data[charOffset]), charWidth, fontInfo->height);
+
+ // next char X
+ currentX += charWidth + 1;
+
+ // next char
+ str++;
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Returns the width in pixels of a string when it is rendered
+
+ This method can be used to determine whether a string will fit
+ inside a specific area, or if it needs to be broken up into multiple
+ lines to be properly rendered on the screen.
+
+ This function only applied to bitmap fonts (which can have variable
+ widths). All smallfonts (if available) are fixed width and can
+ easily have their width calculated without costly functions like
+ this one.
+
+ @param[in] fontInfo
+ Pointer to the FONT_INFO for the font that will be used
+ @param[in] str
+ The string that will be rendered
+*/
+/**************************************************************************/
+uint16_t drawGetStringWidth(const FONT_INFO *fontInfo, char *str)
+{
+ uint16_t width = 0;
+ uint32_t currChar;
+ uint32_t startChar = fontInfo->startChar;
+
+ // until termination
+ for (currChar = *str; currChar; currChar = *(++str))
+ {
+ // if char info exists for the font, use width from there
+ if (fontInfo->charInfo != NULL)
+ {
+ width += fontInfo->charInfo[currChar - startChar].widthBits + 1;
+ }
+ else
+ {
+ width += 5 + 1;
+ }
+ }
+
+ /* return the width */
+ return width > 0 ? width - 1 : width;
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a bresenham line
+
+ @param[in] x0
+ Starting x co-ordinate
+ @param[in] y0
+ Starting y co-ordinate
+ @param[in] x1
+ Ending x co-ordinate
+ @param[in] y1
+ Ending y co-ordinate
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawLine ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color )
+{
+ drawLineDotted(x0, y0, x1, y1, 0, 1, color);
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a bresenham line with a fixed pattern of empty
+ and solid pixels
+
+ Based on: http://www.cs.unc.edu/~mcmillan/comp136/Lecture6/Lines.html
+
+ @param[in] x0
+ Starting x co-ordinate
+ @param[in] y0
+ Starting y co-ordinate
+ @param[in] x1
+ Ending x co-ordinate
+ @param[in] y1
+ Ending y co-ordinate
+ @param[in] empty
+ The number of 'empty' pixels to render
+ @param[in] solid
+ The number of 'solid' pixels to render
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawLineDotted ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t empty, uint16_t solid, uint16_t color )
+{
+ if (solid == 0)
+ {
+ return;
+ }
+
+ // If a negative y int was passed in it will overflow to 65K something
+ // Ugly, but drawCircleFilled() can pass in negative values so we need
+ // to check the values here
+ y0 = y0 > 65000 ? 0 : y0;
+ y1 = y1 > 65000 ? 0 : y1;
+
+ // Check if we can use the optimised horizontal line method
+ if ((y0 == y1) && (empty == 0))
+ {
+ lcdDrawHLine(x0, x1, y0, color);
+ return;
+ }
+
+ // Check if we can use the optimised vertical line method.
+ // This can make a huge difference in performance, but may
+ // not work properly on every LCD controller:
+ if ((x0 == x1) && (empty == 0))
+ {
+ // Warning: This may actually be slower than drawing individual pixels on
+ // short lines ... Set a minimum line size to use the 'optimised' method
+ // (which changes the screen orientation) ?
+ lcdDrawVLine(x0, y0, y1, color);
+ return;
+ }
+
+ // Draw non-horizontal or dotted line
+ int dy = y1 - y0;
+ int dx = x1 - x0;
+ int stepx, stepy;
+ int emptycount, solidcount;
+
+ if (dy < 0) { dy = -dy; stepy = -1; } else { stepy = 1; }
+ if (dx < 0) { dx = -dx; stepx = -1; } else { stepx = 1; }
+ dy <<= 1; // dy is now 2*dy
+ dx <<= 1; // dx is now 2*dx
+
+ emptycount = empty;
+ solidcount = solid;
+
+ drawPixel(x0, y0, color); // always start with solid pixels
+ solidcount--;
+ if (dx > dy)
+ {
+ int fraction = dy - (dx >> 1); // same as 2*dy - dx
+ while (x0 != x1)
+ {
+ if (fraction >= 0)
+ {
+ y0 += stepy;
+ fraction -= dx; // same as fraction -= 2*dx
+ }
+ x0 += stepx;
+ fraction += dy; // same as fraction -= 2*dy
+ if (empty == 0)
+ {
+ // always draw a pixel ... no dotted line requested
+ drawPixel(x0, y0, color);
+ }
+ else if (solidcount)
+ {
+ // Draw solid pxiel and decrement counter
+ drawPixel(x0, y0, color);
+ solidcount--;
+ }
+ else if(emptycount)
+ {
+ // Empty pixel ... don't draw anything an decrement counter
+ emptycount--;
+ }
+ else
+ {
+ // Reset counters and draw solid pixel
+ emptycount = empty;
+ solidcount = solid;
+ drawPixel(x0, y0, color);
+ solidcount--;
+ }
+ }
+ }
+ else
+ {
+ int fraction = dx - (dy >> 1);
+ while (y0 != y1)
+ {
+ if (fraction >= 0)
+ {
+ x0 += stepx;
+ fraction -= dy;
+ }
+ y0 += stepy;
+ fraction += dx;
+ if (empty == 0)
+ {
+ // always draw a pixel ... no dotted line requested
+ drawPixel(x0, y0, color);
+ }
+ if (solidcount)
+ {
+ // Draw solid pxiel and decrement counter
+ drawPixel(x0, y0, color);
+ solidcount--;
+ }
+ else if(emptycount)
+ {
+ // Empty pixel ... don't draw anything an decrement counter
+ emptycount--;
+ }
+ else
+ {
+ // Reset counters and draw solid pixel
+ emptycount = empty;
+ solidcount = solid;
+ drawPixel(x0, y0, color);
+ solidcount--;
+ }
+ }
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a circle
+
+ Based on: http://www.cs.unc.edu/~mcmillan/comp136/Lecture7/circle.html
+
+ @param[in] xCenter
+ The horizontal center of the circle
+ @param[in] yCenter
+ The vertical center of the circle
+ @param[in] radius
+ The circle's radius in pixels
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawCircle (uint16_t xCenter, uint16_t yCenter, uint16_t radius, uint16_t color)
+{
+ int x = 0;
+ int y = radius;
+ int p = (5 - radius*4)/4;
+
+ drawCirclePoints(xCenter, yCenter, x, y, color);
+ while (x < y)
+ {
+ x++;
+ if (p < 0)
+ {
+ p += 2*x+1;
+ }
+ else
+ {
+ y--;
+ p += 2*(x-y)+1;
+ }
+ drawCirclePoints(xCenter, yCenter, x, y, color);
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a filled circle
+
+ @param[in] xCenter
+ The horizontal center of the circle
+ @param[in] yCenter
+ The vertical center of the circle
+ @param[in] radius
+ The circle's radius in pixels
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawCircleFilled (uint16_t xCenter, uint16_t yCenter, uint16_t radius, uint16_t color)
+{
+ int16_t f = 1 - radius;
+ int16_t ddF_x = 1;
+ int16_t ddF_y = -2 * radius;
+ int16_t x = 0;
+ int16_t y = radius;
+ int16_t xc_px, yc_my, xc_mx, xc_py, yc_mx, xc_my;
+ int16_t lcdWidth = lcdGetWidth();
+
+ if (xCenter < lcdWidth) drawLine(xCenter, yCenter-radius < 0 ? 0 : yCenter-radius, xCenter, (yCenter-radius) + (2*radius), color);
+
+ while (x<y)
+ {
+ if (f >= 0)
+ {
+ y--;
+ ddF_y += 2;
+ f += ddF_y;
+ }
+ x++;
+ ddF_x += 2;
+ f += ddF_x;
+
+ xc_px = xCenter+x;
+ xc_mx = xCenter-x;
+ xc_py = xCenter+y;
+ xc_my = xCenter-y;
+ yc_mx = yCenter-x;
+ yc_my = yCenter-y;
+
+ // Make sure X positions are not negative or too large or the pixels will
+ // overflow. Y overflow is handled in drawLine().
+ if ((xc_px < lcdWidth) && (xc_px >= 0)) drawLine(xc_px, yc_my, xc_px, yc_my + 2*y, color);
+ if ((xc_mx < lcdWidth) && (xc_mx >= 0)) drawLine(xc_mx, yc_my, xc_mx, yc_my + 2*y, color);
+ if ((xc_py < lcdWidth) && (xc_py >= 0)) drawLine(xc_py, yc_mx, xc_py, yc_mx + 2*x, color);
+ if ((xc_my < lcdWidth) && (xc_my >= 0)) drawLine(xc_my, yc_mx, xc_my, yc_mx + 2*x, color);
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a filled rounded corner
+
+ @param[in] xCenter
+ The horizontal center of the circle
+ @param[in] yCenter
+ The vertical center of the circle
+ @param[in] radius
+ The circle's radius in pixels
+ @param[in] position
+ The position of the corner, which affects how it will
+ be rendered
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawCornerFilled (uint16_t xCenter, uint16_t yCenter, uint16_t radius, drawCornerPosition_t position, uint16_t color)
+{
+ int16_t f = 1 - radius;
+ int16_t ddF_x = 1;
+ int16_t ddF_y = -2 * radius;
+ int16_t x = 0;
+ int16_t y = radius;
+ int16_t xc_px, yc_my, xc_mx, xc_py, yc_mx, xc_my;
+ int16_t lcdWidth = lcdGetWidth();
+
+ switch (position)
+ {
+ case DRAW_CORNERPOSITION_TOPRIGHT:
+ case DRAW_CORNERPOSITION_TOPLEFT:
+ if (xCenter < lcdWidth) drawLine(xCenter, yCenter-radius < 0 ? 0 : yCenter-radius, xCenter, yCenter, color);
+ break;
+ case DRAW_CORNERPOSITION_BOTTOMRIGHT:
+ case DRAW_CORNERPOSITION_BOTTOMLEFT:
+ if (xCenter < lcdWidth) drawLine(xCenter, yCenter-radius < 0 ? 0 : yCenter, xCenter, (yCenter-radius) + (2*radius), color);
+ break;
+ }
+
+ while (x<y)
+ {
+ if (f >= 0)
+ {
+ y--;
+ ddF_y += 2;
+ f += ddF_y;
+ }
+ x++;
+ ddF_x += 2;
+ f += ddF_x;
+
+ xc_px = xCenter+x;
+ xc_mx = xCenter-x;
+ xc_py = xCenter+y;
+ xc_my = xCenter-y;
+ yc_mx = yCenter-x;
+ yc_my = yCenter-y;
+
+ switch (position)
+ {
+ case DRAW_CORNERPOSITION_TOPRIGHT:
+ if ((xc_px < lcdWidth) && (xc_px >= 0)) drawLine(xc_px, yc_my, xc_px, yCenter, color);
+ if ((xc_py < lcdWidth) && (xc_py >= 0)) drawLine(xc_py, yc_mx, xc_py, yCenter, color);
+ break;
+ case DRAW_CORNERPOSITION_BOTTOMRIGHT:
+ if ((xc_px < lcdWidth) && (xc_px >= 0)) drawLine(xc_px, yCenter, xc_px, yc_my + 2*y, color);
+ if ((xc_py < lcdWidth) && (xc_py >= 0)) drawLine(xc_py, yCenter, xc_py, yc_mx + 2*x, color);
+ break;
+ case DRAW_CORNERPOSITION_TOPLEFT:
+ if ((xc_mx < lcdWidth) && (xc_mx >= 0)) drawLine(xc_mx, yc_my, xc_mx, yCenter, color);
+ if ((xc_my < lcdWidth) && (xc_my >= 0)) drawLine(xc_my, yc_mx, xc_my, yCenter, color);
+ break;
+ case DRAW_CORNERPOSITION_BOTTOMLEFT:
+ if ((xc_mx < lcdWidth) && (xc_mx >= 0)) drawLine(xc_mx, yCenter, xc_mx, yc_my + 2*y, color);
+ if ((xc_my < lcdWidth) && (xc_my >= 0)) drawLine(xc_my, yCenter, xc_my, yc_mx + 2*x, color);
+ break;
+ }
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a simple arrow of the specified width
+
+ @param[in] x
+ X co-ordinate of the smallest point of the arrow
+ @param[in] y
+ Y co-ordinate of the smallest point of the arrow
+ @param[in] size
+ Total width/height of the arrow in pixels
+ @param[in] direction
+ The direction that the arrow is pointing
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawArrow(uint16_t x, uint16_t y, uint16_t size, drawDirection_t direction, uint16_t color)
+{
+ drawPixel(x, y, color);
+
+ if (size == 1)
+ {
+ return;
+ }
+
+ uint32_t i;
+ switch (direction)
+ {
+ case DRAW_DIRECTION_LEFT:
+ for (i = 1; i<size; i++)
+ {
+ drawLine(x+i, y-i, x+i, y+i, color);
+ }
+ break;
+ case DRAW_DIRECTION_RIGHT:
+ for (i = 1; i<size; i++)
+ {
+ drawLine(x-i, y-i, x-i, y+i, color);
+ }
+ break;
+ case DRAW_DIRECTION_UP:
+ for (i = 1; i<size; i++)
+ {
+ drawLine(x-i, y+i, x+i, y+i, color);
+ }
+ break;
+ case DRAW_DIRECTION_DOWN:
+ for (i = 1; i<size; i++)
+ {
+ drawLine(x-i, y-i, x+i, y-i, color);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a simple (empty) rectangle
+
+ @param[in] x0
+ Starting x co-ordinate
+ @param[in] y0
+ Starting y co-ordinate
+ @param[in] x1
+ Ending x co-ordinate
+ @param[in] y1
+ Ending y co-ordinate
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawRectangle ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color)
+{
+ uint16_t x, y;
+
+ if (y1 < y0)
+ {
+ // Switch y1 and y0
+ y = y1;
+ y1 = y0;
+ y0 = y;
+ }
+
+ if (x1 < x0)
+ {
+ // Switch x1 and x0
+ x = x1;
+ x1 = x0;
+ x0 = x;
+ }
+
+ drawLine (x0, y0, x1, y0, color);
+ drawLine (x1, y0, x1, y1, color);
+ drawLine (x1, y1, x0, y1, color);
+ drawLine (x0, y1, x0, y0, color);
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a filled rectangle
+
+ @param[in] x0
+ Starting x co-ordinate
+ @param[in] y0
+ Starting y co-ordinate
+ @param[in] x1
+ Ending x co-ordinate
+ @param[in] y1
+ Ending y co-ordinate
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawRectangleFilled ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color)
+{
+ int height;
+ uint16_t x, y;
+
+ if (y1 < y0)
+ {
+ // Switch y1 and y0
+ y = y1;
+ y1 = y0;
+ y0 = y;
+ }
+
+ if (x1 < x0)
+ {
+ // Switch x1 and x0
+ x = x1;
+ x1 = x0;
+ x0 = x;
+ }
+
+ height = y1 - y0;
+ for (height = y0; y1 > height - 1; ++height)
+ {
+ drawLine(x0, height, x1, height, color);
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a filled rectangle with rounded corners
+
+ @param[in] x0
+ Starting x co-ordinate
+ @param[in] y0
+ Starting y co-ordinate
+ @param[in] x1
+ Ending x co-ordinate
+ @param[in] y1
+ Ending y co-ordinate
+ @param[in] color
+ Color used when drawing
+ @param[in] radius
+ Corner radius in pixels
+ @param[in] corners
+ Which corners to round
+*/
+/**************************************************************************/
+void drawRectangleRounded ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t color, uint16_t radius, drawRoundedCorners_t corners )
+{
+ int height;
+ uint16_t y;
+
+ if (corners == DRAW_ROUNDEDCORNERS_NONE)
+ {
+ drawRectangleFilled(x0, y0, x1, y1, color);
+ return;
+ }
+
+ // Calculate height
+ if (y1 < y0)
+ {
+ y = y1;
+ y1 = y0;
+ y0 = y;
+ }
+ height = y1 - y0;
+
+ // Check radius
+ if (radius > height / 2)
+ {
+ radius = height / 2;
+ }
+ radius -= 1;
+
+ // Draw body
+ drawRectangleFilled(x0 + radius, y0, x1 - radius, y1, color);
+
+ switch (corners)
+ {
+ case DRAW_ROUNDEDCORNERS_ALL:
+ drawCircleFilled(x0 + radius, y0 + radius, radius, color);
+ drawCircleFilled(x1 - radius, y0 + radius, radius, color);
+ drawCircleFilled(x0 + radius, y1 - radius, radius, color);
+ drawCircleFilled(x1 - radius, y1 - radius, radius, color);
+ if (radius*2+1 < height)
+ {
+ drawRectangleFilled(x0, y0 + radius, x0 + radius, y1 - radius, color);
+ drawRectangleFilled(x1 - radius, y0 + radius, x1, y1 - radius, color);
+ }
+ break;
+ case DRAW_ROUNDEDCORNERS_TOP:
+ drawCircleFilled(x0 + radius, y0 + radius, radius, color);
+ drawCircleFilled(x1 - radius, y0 + radius, radius, color);
+ drawRectangleFilled(x0, y0 + radius, x0 + radius, y1, color);
+ drawRectangleFilled(x1 - radius, y0 + radius, x1, y1, color);
+ break;
+ case DRAW_ROUNDEDCORNERS_BOTTOM:
+ drawCircleFilled(x0 + radius, y1 - radius, radius, color);
+ drawCircleFilled(x1 - radius, y1 - radius, radius, color);
+ drawRectangleFilled(x0, y0, x0 + radius, y1 - radius, color);
+ drawRectangleFilled(x1 - radius, y0, x1, y1 - radius, color);
+ break;
+ case DRAW_ROUNDEDCORNERS_LEFT:
+ drawCircleFilled(x0 + radius, y0 + radius, radius, color);
+ drawCircleFilled(x0 + radius, y1 - radius, radius, color);
+ if (radius*2+1 < height)
+ {
+ drawRectangleFilled(x0, y0 + radius, x0 + radius, y1 - radius, color);
+ }
+ drawRectangleFilled(x1 - radius, y0, x1, y1, color);
+ break;
+ case DRAW_ROUNDEDCORNERS_RIGHT:
+ drawCircleFilled(x1 - radius, y0 + radius, radius, color);
+ drawCircleFilled(x1 - radius, y1 - radius, radius, color);
+ if (radius*2+1 < height)
+ {
+ drawRectangleFilled(x1 - radius, y0 + radius, x1, y1 - radius, color);
+ }
+ drawRectangleFilled(x0, y0, x0 + radius, y1, color);
+ break;
+ default:
+ break;
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a triangle
+
+ @param[in] x0
+ x co-ordinate for point 0
+ @param[in] y0
+ y co-ordinate for point 0
+ @param[in] x1
+ x co-ordinate for point 1
+ @param[in] y1
+ y co-ordinate for point 1
+ @param[in] x2
+ x co-ordinate for point 2
+ @param[in] y2
+ y co-ordinate for point 2
+ @param[in] color
+ Color used when drawing
+*/
+/**************************************************************************/
+void drawTriangle ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
+{
+ drawLine(x0, y0, x1, y1, color);
+ drawLine(x1, y1, x2, y2, color);
+ drawLine(x2, y2, x0, y0, color);
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a filled triangle
+
+ @param[in] x0
+ x co-ordinate for point 0
+ @param[in] y0
+ y co-ordinate for point 0
+ @param[in] x1
+ x co-ordinate for point 1
+ @param[in] y1
+ y co-ordinate for point 1
+ @param[in] x2
+ x co-ordinate for point 2
+ @param[in] y2
+ y co-ordinate for point 2
+ @param[in] color
+ Fill color
+
+ @section Example
+
+ @code
+
+ // Draw a white triangle
+ drawTriangleFilled ( 100, 10, 20, 120, 230, 290, COLOR_WHITE);
+ // Draw black circles at each point of the triangle
+ drawCircleFilled(100, 10, 2, COLOR_BLACK);
+ drawCircleFilled(20, 120, 2, COLOR_BLACK);
+ drawCircleFilled(230, 290, 2, COLOR_BLACK);
+
+ @endcode
+*/
+/**************************************************************************/
+void drawTriangleFilled ( uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
+{
+ // Re-order vertices by ascending Y values (smallest first)
+ if (y0 > y1) {
+ drawSwap(y0, y1); drawSwap(x0, x1);
+ }
+ if (y1 > y2) {
+ drawSwap(y2, y1); drawSwap(x2, x1);
+ }
+ if (y0 > y1) {
+ drawSwap(y0, y1); drawSwap(x0, x1);
+ }
+
+ int32_t dx1, dx2, dx3; // Interpolation deltas
+ int32_t sx1, sx2, sy; // Scanline co-ordinates
+
+ sx1=sx2=x0 * 1000; // Use fixed point math for x axis values
+ sy=y0;
+
+ // Calculate interpolation deltas
+ if (y1-y0 > 0) dx1=((x1-x0)*1000)/(y1-y0);
+ else dx1=0;
+ if (y2-y0 > 0) dx2=((x2-x0)*1000)/(y2-y0);
+ else dx2=0;
+ if (y2-y1 > 0) dx3=((x2-x1)*1000)/(y2-y1);
+ else dx3=0;
+
+ // Render scanlines (horizontal lines are the fastest rendering method)
+ if (dx1 > dx2)
+ {
+ for(; sy<=y1; sy++, sx1+=dx2, sx2+=dx1)
+ {
+ drawLine(sx1/1000, sy, sx2/1000, sy, color);
+ }
+ sx2 = x1*1000;
+ sy = y1;
+ for(; sy<=y2; sy++, sx1+=dx2, sx2+=dx3)
+ {
+ drawLine(sx1/1000, sy, sx2/1000, sy, color);
+ }
+ }
+ else
+ {
+ for(; sy<=y1; sy++, sx1+=dx1, sx2+=dx2)
+ {
+ drawLine(sx1/1000, sy, sx2/1000, sy, color);
+ }
+ sx1 = x1*1000;
+ sy = y1;
+ for(; sy<=y2; sy++, sx1+=dx3, sx2+=dx2)
+ {
+ drawLine(sx1/1000, sy, sx2/1000, sy, color);
+ }
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Converts a 24-bit RGB color to an equivalent 16-bit RGB565 value
+
+ @param[in] r
+ 8-bit red
+ @param[in] g
+ 8-bit green
+ @param[in] b
+ 8-bit blue
+
+ @section Example
+
+ @code
+
+ // Get 16-bit equivalent of 24-bit color
+ uint16_t gray = drawRGB24toRGB565(0x33, 0x33, 0x33);
+
+ @endcode
+*/
+/**************************************************************************/
+uint16_t drawRGB24toRGB565(uint8_t r, uint8_t g, uint8_t b)
+{
+ return ((r / 8) << 11) | ((g / 4) << 5) | (b / 8);
+}
+
+/**************************************************************************/
+/*!
+ @brief Converts a 16-bit RGB565 color to a standard 32-bit BGRA32
+ color (with alpha set to 0xFF)
+
+ @param[in] color
+ 16-bit rgb565 color
+
+ @section Example
+
+ @code
+
+ // First convert 24-bit color to RGB565
+ uint16_t rgb565 = drawRGB24toRGB565(0xFF, 0x00, 0x00);
+
+ // Convert RGB565 color back to BGRA32
+ uint32_t bgra32 = drawRGB565toBGRA32(rgb565);
+
+ // Display results
+ printf("BGRA32: 0x%08X R: %u G: %u B: %u A: %u \r\n",
+ bgra32,
+ (bgra32 & 0x000000FF), // Blue
+ (bgra32 & 0x0000FF00) >> 8, // Green
+ (bgra32 & 0x00FF0000) >> 16, // Red
+ (bgra32 & 0xFF000000) >> 24); // Alpha
+
+ @endcode
+*/
+/**************************************************************************/
+uint32_t drawRGB565toBGRA32(uint16_t color)
+{
+ uint32_t bits = (uint32_t)color;
+ uint32_t blue = bits & 0x001F; // 5 bits blue
+ uint32_t green = bits & 0x07E0; // 6 bits green
+ uint32_t red = bits & 0xF800; // 5 bits red
+
+ // Return shifted bits with alpha set to 0xFF
+ return (red << 8) | (green << 5) | (blue << 3) | 0xFF000000;
+}
+
+/**************************************************************************/
+/*!
+ @brief Reverses a 16-bit color from BGR to RGB
+*/
+/**************************************************************************/
+uint16_t drawBGR2RGB(uint16_t color)
+{
+ uint16_t r, g, b;
+
+ b = (color>>0) & 0x1f;
+ g = (color>>5) & 0x3f;
+ r = (color>>11) & 0x1f;
+
+ return( (b<<11) + (g<<5) + (r<<0) );
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a progress bar with rounded corners
+
+ @param[in] x
+ Starting x location
+ @param[in] y
+ Starting y location
+ @param[in] width
+ Total width of the progress bar in pixels
+ @param[in] height
+ Total height of the progress bar in pixels
+ @param[in] borderCorners
+ The type of rounded corners to render with the progress bar border
+ @param[in] progressCorners
+ The type of rounded corners to render with the inner progress bar
+ @param[in] borderColor
+ 16-bit color for the outer border
+ @param[in] borderFillColor
+ 16-bit color for the interior of the outer border
+ @param[in] progressBorderColor
+ 16-bit color for the progress bar's border
+ @param[in] progressFillColor
+ 16-bit color for the inner bar's fill
+ @param[in] progress
+ Progress percentage (between 0 and 100)
+
+ @section Example
+
+ @code
+ #include "drivers/displays/tft/drawing.h"
+
+ // Draw a the progress bar (150x15 pixels large, starting at X:10, Y:195
+ // with rounded corners on the top and showing 72% progress)
+ drawProgressBar(10, 195, 150, 15, DRAW_ROUNDEDCORNERS_TOP, DRAW_ROUNDEDCORNERS_TOP, COLOR_DARKERGRAY, COLOR_DARKGRAY, COLOR_LIMEGREENDIM, COLOR_LIMEGREEN, 72 );
+
+ @endcode
+*/
+/**************************************************************************/
+void drawProgressBar ( uint16_t x, uint16_t y, uint16_t width, uint16_t height, drawRoundedCorners_t borderCorners, drawRoundedCorners_t progressCorners, uint16_t borderColor, uint16_t borderFillColor, uint16_t progressBorderColor, uint16_t progressFillColor, uint8_t progress )
+{
+ // Draw border with rounded corners
+ drawRectangleRounded(x, y, x + width, y + height, borderColor, 5, borderCorners);
+ drawRectangleRounded(x+1, y+1, x + width - 1, y + height - 1, borderFillColor, 5, borderCorners);
+
+ // Progress bar
+ if (progress > 0 && progress <= 100)
+ {
+ // Calculate bar size
+ uint16_t bw;
+ bw = (width - 6); // bar at 100%
+ if (progress != 100)
+ {
+ bw = (bw * progress) / 100;
+ }
+ drawRectangleRounded(x + 3, y + 3, bw + x + 3, y + height - 3, progressBorderColor, 5, progressCorners);
+ drawRectangleRounded(x + 4, y + 4, bw + x + 3 - 1, y + height - 4, progressFillColor, 5, progressCorners);
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Draws a simple button
+
+ @param[in] x
+ Starting x location
+ @param[in] y
+ Starting y location
+ @param[in] width
+ Total width of the button in pixels
+ @param[in] height
+ Total height of the button in pixels
+ @param[in] fontInfo
+ Pointer to the FONT_INFO used to render the button text
+ @param[in] fontHeight
+ The height in pixels of the font (used for centering)
+ @param[in] borderclr
+ The rgb565 border color
+ @param[in] fillclr
+ The rgb565 background color
+ @param[in] fontclr
+ The rgb565 font color
+ @param[in] text
+ The text to render on the button
+
+ @section Example
+
+ @code
+
+ #include "drivers/displays/tft/drawing.h"
+ #include "drivers/displays/tft/fonts/dejavusans9.h"
+
+ // Draw two buttons using Vera Sans Bold 9
+ drawButton(20, 195, 200, 35, &dejaVuSans9ptFontInfo, 7, COLOR_GRAY_80, COLOR_GRAY_80, COLOR_WHITE, "System Settings");
+ drawButton(20, 235, 200, 35, &dejaVuSans9ptFontInfo, 7, COLOR_THEME_LIMEGREEN_DARKER, COLOR_THEME_LIMEGREEN_BASE, COLOR_BLACK, "System Settings");
+
+ @endcode
+*/
+/**************************************************************************/
+void drawButton(uint16_t x, uint16_t y, uint16_t width, uint16_t height, const FONT_INFO *fontInfo, uint16_t fontHeight, uint16_t borderclr, uint16_t fillclr, uint16_t fontclr, char* text)
+{
+ // Border
+ drawRectangleRounded(x, y, x + width, y + height, borderclr, 5, DRAW_ROUNDEDCORNERS_ALL);
+ // Fill
+ drawRectangleRounded(x+2, y+2, x+width-2, y+height-2, fillclr, 5, DRAW_ROUNDEDCORNERS_ALL);
+
+ // Render text
+ if (text != NULL)
+ {
+ uint16_t textWidth = drawGetStringWidth(&*fontInfo, text);
+ uint16_t xStart = x + (width / 2) - (textWidth / 2);
+ uint16_t yStart = y + (height / 2) - (fontHeight / 2) + 1;
+ drawString(xStart, yStart, fontclr, &*fontInfo, text);
+ }
+}
+
+/**************************************************************************/
+/*!
+ @brief Renders a 16x16 monochrome icon using the supplied uint16_t
+ array.
+
+ @param[in] x
+ The horizontal location to start rendering from
+ @param[in] x
+ The vertical location to start rendering from
+ @param[in] color
+ The RGB565 color to use when rendering the icon
+ @param[in] icon
+ The uint16_t array containing the 16x16 image data
+
+ @section Example
+
+ @code
+
+ #include "drivers/displays/tft/drawing.h"
+ #include "drivers/displays/icons16.h"
+
+ // Renders the info icon, which has two seperate parts ... the exterior
+ // and a seperate interior mask if you want to fill the contents with a
+ // different color
+ drawIcon16(132, 202, COLOR_BLUE, icons16_info);
+ drawIcon16(132, 202, COLOR_WHITE, icons16_info_interior);
+
+ @endcode
+*/
+/**************************************************************************/
+void drawIcon16(uint16_t x, uint16_t y, uint16_t color, uint16_t icon[])
+{
+ int i;
+ for (i = 0; i<16; i++)
+ {
+ if (icon[i] & (0X8000)) drawPixel(x, y+i, color);
+ if (icon[i] & (0X4000)) drawPixel(x+1, y+i, color);
+ if (icon[i] & (0X2000)) drawPixel(x+2, y+i, color);
+ if (icon[i] & (0X1000)) drawPixel(x+3, y+i, color);
+ if (icon[i] & (0X0800)) drawPixel(x+4, y+i, color);
+ if (icon[i] & (0X0400)) drawPixel(x+5, y+i, color);
+ if (icon[i] & (0X0200)) drawPixel(x+6, y+i, color);
+ if (icon[i] & (0X0100)) drawPixel(x+7, y+i, color);
+ if (icon[i] & (0X0080)) drawPixel(x+8, y+i, color);
+ if (icon[i] & (0x0040)) drawPixel(x+9, y+i, color);
+ if (icon[i] & (0X0020)) drawPixel(x+10, y+i, color);
+ if (icon[i] & (0X0010)) drawPixel(x+11, y+i, color);
+ if (icon[i] & (0X0008)) drawPixel(x+12, y+i, color);
+ if (icon[i] & (0X0004)) drawPixel(x+13, y+i, color);
+ if (icon[i] & (0X0002)) drawPixel(x+14, y+i, color);
+ if (icon[i] & (0X0001)) drawPixel(x+15, y+i, color);
+ }
+}
+
+#ifdef CFG_SDCARD
+/**************************************************************************/
+/*!
+ @brief Loads a 24-bit Windows bitmap image from an SD card and
+ renders it
+
+ @section Example
+
+ @code
+
+ #include "drivers/displays/tft/drawing.h"
+
+ // Draw image.bmp (from the root folder) starting at pixel 0,0
+ bmp_error_t error = drawBitmapImage(0, 0, "/image.bmp");
+
+ if (error)
+ {
+ switch (error)
+ {
+ case BMP_ERROR_SDINITFAIL:
+ break;
+ case BMP_ERROR_FILENOTFOUND:
+ break;
+ case BMP_ERROR_NOTABITMAP:
+ // First two bytes of image not 'BM'
+ break;
+ case BMP_ERROR_INVALIDBITDEPTH:
+ // Image is not 24-bits
+ break;
+ case BMP_ERROR_COMPRESSEDDATA:
+ // Image contains compressed data
+ break;
+ case BMP_ERROR_INVALIDDIMENSIONS:
+ // Width or Height is > LCD size
+ break;
+ case BMP_ERROR_PREMATUREEOF:
+ // EOF unexpectedly reached in pixel data
+ break;
+ }
+ }
+
+ @endcode
+*/
+/**************************************************************************/
+bmp_error_t drawBitmapImage(uint16_t x, uint16_t y, char *filename)
+{
+ return bmpDrawBitmap(x, y, filename);
+}
+
+#endif
projects / hackover2013-badge-firmware.git / blobdiff