/**************************************************************************** * examples/nxhello/nxhello_bkgd.c * * Copyright (C) 2011 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 NuttX 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 AND CONTRIBUTORS * "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 OWNER OR CONTRIBUTORS 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. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include #include #include #include "nxhello.h" /**************************************************************************** * Definitions ****************************************************************************/ /* Select renderer -- Some additional logic would be required to support * pixel depths that are not directly addressable (1,2,4, and 24). */ #if CONFIG_EXAMPLES_NXHELLO_BPP == 1 # define RENDERER nxf_convert_1bpp #elif CONFIG_EXAMPLES_NXHELLO_BPP == 2 # define RENDERER nxf_convert_2bpp #elif CONFIG_EXAMPLES_NXHELLO_BPP == 4 # define RENDERER nxf_convert_4bpp #elif CONFIG_EXAMPLES_NXHELLO_BPP == 8 # define RENDERER nxf_convert_8bpp #elif CONFIG_EXAMPLES_NXHELLO_BPP == 16 # define RENDERER nxf_convert_16bpp #elif CONFIG_EXAMPLES_NXHELLO_BPP == 24 # define RENDERER nxf_convert_24bpp #elif CONFIG_EXAMPLES_NXHELLO_BPP == 32 # define RENDERER nxf_convert_32bpp #else # error "Unsupported CONFIG_EXAMPLES_NXHELLO_BPP" #endif /**************************************************************************** * Private Types ****************************************************************************/ /**************************************************************************** * Private Function Prototypes ****************************************************************************/ static void nxhello_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect, bool morem, FAR void *arg); static void nxhello_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size, FAR const struct nxgl_point_s *pos, FAR const struct nxgl_rect_s *bounds, FAR void *arg); #ifdef CONFIG_NX_MOUSE static void nxhello_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos, uint8_t buttons, FAR void *arg); #endif #ifdef CONFIG_NX_KBD static void nxhello_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch, FAR void *arg); #endif /**************************************************************************** * Private Data ****************************************************************************/ static const char g_hello[] = "Hello, World!"; /**************************************************************************** * Public Data ****************************************************************************/ /* Background window call table */ const struct nx_callback_s g_bgcb = { nxhello_redraw, /* redraw */ nxhello_position /* position */ #ifdef CONFIG_NX_MOUSE , nxhello_mousein /* mousein */ #endif #ifdef CONFIG_NX_KBD , nxhello_kbdin /* my kbdin */ #endif }; /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: nxhello_redraw ****************************************************************************/ static void nxhello_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect, bool more, FAR void *arg) { gvdbg("hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n", hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y, more ? "true" : "false"); } /**************************************************************************** * Name: nxhello_position ****************************************************************************/ static void nxhello_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size, FAR const struct nxgl_point_s *pos, FAR const struct nxgl_rect_s *bounds, FAR void *arg) { /* Report the position */ gvdbg("hwnd=%p size=(%d,%d) pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n", hwnd, size->w, size->h, pos->x, pos->y, bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y); /* Have we picked off the window bounds yet? */ if (!g_nxhello.havepos) { /* Save the background window handle */ g_nxhello.hbkgd = hwnd; /* Save the window limits */ g_nxhello.xres = bounds->pt2.x + 1; g_nxhello.yres = bounds->pt2.y + 1; g_nxhello.havepos = true; sem_post(&g_nxhello.sem); gvdbg("Have xres=%d yres=%d\n", g_nxhello.xres, g_nxhello.yres); } } /**************************************************************************** * Name: nxhello_mousein ****************************************************************************/ #ifdef CONFIG_NX_MOUSE static void nxhello_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos, uint8_t buttons, FAR void *arg) { message("nxhello_mousein: hwnd=%p pos=(%d,%d) button=%02x\n", hwnd, pos->x, pos->y, buttons); } #endif /**************************************************************************** * Name: nxhello_kbdin ****************************************************************************/ #ifdef CONFIG_NX_KBD static void nxhello_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch, FAR void *arg) { gvdbg("hwnd=%p nch=%d\n", hwnd, nch); /* In this example, there is no keyboard so a keyboard event is not * expected. */ message("nxhello_kbdin: Unexpected keyboard callback\n"); } #endif /**************************************************************************** * Name: nxhello_center ****************************************************************************/ static void nxhello_center(FAR struct nxgl_point_s *pos, FAR const struct nx_font_s *fontset) { FAR const struct nx_fontbitmap_s *fbm; FAR uint8_t *ptr; unsigned int width; /* Get the width of the collection of characters so that we can center the * hello world message. */ for (ptr = (uint8_t*)g_hello, width = 0; *ptr; ptr++) { /* Get the font bitmap for this character */ fbm = nxf_getbitmap(*ptr); if (fbm) { /* Add the font size */ width += fbm->metric.width; } else { /* Use the width of a space */ width += fontset->spwidth; } } /* Now we know how to center the string. Create a the position and * the bounding box */ pos->x = (g_nxhello.xres - width) / 2; pos->y = (g_nxhello.yres - fbm->metric.height) / 2; } /**************************************************************************** * Name: nxhello_initglyph ****************************************************************************/ static void nxhello_initglyph(FAR uint8_t *glyph, uint8_t height, uint8_t width, uint8_t stride) { FAR nxgl_mxpixel_t *ptr; #if CONFIG_EXAMPLES_NXHELLO_BPP < 8 nxgl_mxpixel_t pixel; #endif unsigned int row; unsigned int col; /* Initialize the glyph memory to the background color */ #if CONFIG_EXAMPLES_NXHELLO_BPP < 8 pixel = CONFIG_EXAMPLES_NXHELLO_BGCOLOR; #if CONFIG_NX_NPLANES > 1 # warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" #endif # if CONFIG_EXAMPLES_NXHELLO_BPP == 1 /* Pack 1-bit pixels into a 2-bits */ pixel &= 0x01; pixel = (pixel) << 1 |pixel; # endif # if CONFIG_EXAMPLES_NXHELLO_BPP < 4 /* Pack 2-bit pixels into a nibble */ pixel &= 0x03; pixel = (pixel) << 2 |pixel; # endif /* Pack 4-bit nibbles into a byte */ pixel &= 0x0f; pixel = (pixel) << 4 | pixel; ptr = (FAR nxgl_mxpixel_t *)glyph; for (row = 0; row < fheight; row++) { for (col = 0; col < stride; col++) { /* Transfer the packed bytes into the buffer */ *ptr++ = pixel; } } #elif CONFIG_EXAMPLES_NXHELLO_BPP == 24 # error "Additional logic is needed here for 24bpp support" #else /* CONFIG_EXAMPLES_NXHELLO_BPP = {8,16,32} */ ptr = (FAR nxgl_mxpixel_t *)glyph; for (row = 0; row < height; row++) { /* Just copy the color value into the glyph memory */ for (col = 0; col < width; col++) { *ptr++ = CONFIG_EXAMPLES_NXHELLO_BGCOLOR; #if CONFIG_NX_NPLANES > 1 # warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" #endif } } #endif } /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: nxhello_write * * Description: * Put a sequence of bytes in the window. * ****************************************************************************/ void nxhello_hello(NXWINDOW hwnd) { FAR const struct nx_font_s *fontset; FAR const struct nx_fontbitmap_s *fbm; FAR uint8_t *glyph; FAR const char *ptr; FAR struct nxgl_point_s pos; FAR struct nxgl_rect_s dest; FAR const void *src[CONFIG_NX_NPLANES]; unsigned int glyphsize; int ret; /* Get information about the font we are going to use */ fontset = nxf_getfontset(); /* Allocate a bit of memory to hold the largest rendered font */ glyphsize = (unsigned int)fontset->mxheight * (unsigned int)fontset->mxwidth; glyph = (FAR uint8_t*)malloc(glyphsize); /* NOTE: no check for failure to allocate the memory. In a real application * you would need to handle that event. */ /* Get a position so the the "Hello, World!" string will be centered on the * display. */ nxhello_center(&pos, fontset); message("nxhello_hello: Position (%d,%d)\n", pos.x, pos.y); /* Now we can say "hello" in the center of the display. */ for (ptr = g_hello; *ptr; ptr++) { /* Get the bitmap font for this ASCII code */ fbm = nxf_getbitmap(*ptr); if (fbm) { uint8_t fheight; /* Height of this glyph (in rows) */ uint8_t fwidth; /* Width of this glyph (in pixels) */ uint8_t fstride; /* Width of the glyph row (in bytes) */ /* Get information about the fount bitmap */ fwidth = fbm->metric.width + fbm->metric.xoffset; fheight = fbm->metric.height + fbm->metric.yoffset; fstride = (fwidth * CONFIG_EXAMPLES_NXHELLO_BPP + 7) / 8; /* Initialize the glyph memory to the background color */ nxhello_initglyph(glyph, fheight, fwidth, fstride); /* Then render the glyph into the allocated memory */ #if CONFIG_NX_NPLANES > 1 # warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" #endif (void)RENDERER((FAR nxgl_mxpixel_t*)glyph, fheight, fwidth, fstride, fbm, CONFIG_EXAMPLES_NXHELLO_FONTCOLOR); /* Describe the destination of the font with a rectangle */ dest.pt1.x = pos.x; dest.pt1.y = pos.y; dest.pt2.x = pos.x + fwidth - 1; dest.pt2.y = pos.y + fheight - 1; /* Then put the font on the display */ src[0] = (FAR const void *)glyph; #if CONFIG_NX_NPLANES > 1 # warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" #endif ret = nx_bitmap((NXWINDOW)hwnd, &dest, src, &pos, fstride); if (ret < 0) { message("nxhello_write: nx_bitmapwindow failed: %d\n", errno); } /* Skip to the right the width of the font */ pos.x += fwidth; } else { /* No bitmap (probably because the font is a space). Skip to the * right the width of a space. */ pos.x += fontset->spwidth; } } }