619 lines
16 KiB
C
619 lines
16 KiB
C
/*
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* File : image_xpm.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-10-16 Bernard first version
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*/
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#include <stdio.h>
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#include <string.h>
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#include <rtgui/filerw.h>
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#include <rtgui/image_xpm.h>
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#include <rtgui/rtgui_system.h>
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#ifdef RTGUI_IMAGE_XPM
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#define XPM_MAGIC_LEN 9
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static rt_bool_t rtgui_image_xpm_check(struct rtgui_filerw *file);
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static rt_bool_t rtgui_image_xpm_load(struct rtgui_image *image, struct rtgui_filerw *file, rt_bool_t load);
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static void rtgui_image_xpm_unload(struct rtgui_image *image);
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static void rtgui_image_xpm_blit(struct rtgui_image *image, struct rtgui_dc *dc, struct rtgui_rect *rect);
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struct rtgui_image_engine rtgui_image_xpm_engine =
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{
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"xpm",
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{RT_NULL},
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rtgui_image_xpm_check,
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rtgui_image_xpm_load,
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rtgui_image_xpm_unload,
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rtgui_image_xpm_blit,
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RT_NULL,
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RT_NULL
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};
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struct rgb_item
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{
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char *name;
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int r;
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int g;
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int b;
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};
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const struct rgb_item rgbRecord[234] =
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{
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{"AliceBlue", 240, 248, 255},
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{"AntiqueWhite", 250, 235, 215},
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{"Aquamarine", 50, 191, 193},
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{"Azure", 240, 255, 255},
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{"Beige", 245, 245, 220},
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{"Bisque", 255, 228, 196},
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{"Black", 0, 0, 0},
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{"BlanchedAlmond", 255, 235, 205},
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{"Blue", 0, 0, 255},
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{"BlueViolet", 138, 43, 226},
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{"Brown", 165, 42, 42},
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{"burlywood", 222, 184, 135},
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{"CadetBlue", 95, 146, 158},
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{"chartreuse", 127, 255, 0},
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{"chocolate", 210, 105, 30},
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{"Coral", 255, 114, 86},
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{"CornflowerBlue", 34, 34, 152},
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{"cornsilk", 255, 248, 220},
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{"Cyan", 0, 255, 255},
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{"DarkGoldenrod", 184, 134, 11},
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{"DarkGreen", 0, 86, 45},
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{"DarkKhaki", 189, 183, 107},
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{"DarkOliveGreen", 85, 86, 47},
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{"DarkOrange", 255, 140, 0},
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{"DarkOrchid", 139, 32, 139},
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{"DarkSalmon", 233, 150, 122},
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{"DarkSeaGreen", 143, 188, 143},
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{"DarkSlateBlue", 56, 75, 102},
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{"DarkSlateGray", 47, 79, 79},
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{"DarkTurquoise", 0, 166, 166},
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{"DarkViolet", 148, 0, 211},
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{"DeepPink", 255, 20, 147},
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{"DeepSkyBlue", 0, 191, 255},
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{"DimGray", 84, 84, 84},
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{"DodgerBlue", 30, 144, 255},
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{"Firebrick", 142, 35, 35},
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{"FloralWhite", 255, 250, 240},
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{"ForestGreen", 80, 159, 105},
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{"gainsboro", 220, 220, 220},
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{"GhostWhite", 248, 248, 255},
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{"Gold", 218, 170, 0},
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{"Goldenrod", 239, 223, 132},
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{"Gray", 126, 126, 126},
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{"Gray0", 0, 0, 0},
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{"Gray1", 3, 3, 3},
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{"Gray10", 26, 26, 26},
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{"Gray100", 255, 255, 255},
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{"Gray11", 28, 28, 28},
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{"Gray12", 31, 31, 31},
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{"Gray13", 33, 33, 33},
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{"Gray14", 36, 36, 36},
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{"Gray15", 38, 38, 38},
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{"Gray16", 41, 41, 41},
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{"Gray17", 43, 43, 43},
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{"Gray18", 46, 46, 46},
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{"Gray19", 48, 48, 48},
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{"Gray2", 5, 5, 5},
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{"Gray20", 51, 51, 51},
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{"Gray21", 54, 54, 54},
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{"Gray22", 56, 56, 56},
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{"Gray23", 59, 59, 59},
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{"Gray24", 61, 61, 61},
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{"Gray25", 64, 64, 64},
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{"Gray26", 66, 66, 66},
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{"Gray27", 69, 69, 69},
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{"Gray28", 71, 71, 71},
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{"Gray29", 74, 74, 74},
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{"Gray3", 8, 8, 8},
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{"Gray30", 77, 77, 77},
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{"Gray31", 79, 79, 79},
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{"Gray32", 82, 82, 82},
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{"Gray33", 84, 84, 84},
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{"Gray34", 87, 87, 87},
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{"Gray35", 89, 89, 89},
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{"Gray36", 92, 92, 92},
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{"Gray37", 94, 94, 94},
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{"Gray38", 97, 97, 97},
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{"Gray39", 99, 99, 99},
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{"Gray4", 10, 10, 10},
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{"Gray40", 102, 102, 102},
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{"Gray41", 105, 105, 105},
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{"Gray42", 107, 107, 107},
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{"Gray43", 110, 110, 110},
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{"Gray44", 112, 112, 112},
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{"Gray45", 115, 115, 115},
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{"Gray46", 117, 117, 117},
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{"Gray47", 120, 120, 120},
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{"Gray48", 122, 122, 122},
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{"Gray49", 125, 125, 125},
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{"Gray5", 13, 13, 13},
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{"Gray50", 127, 127, 127},
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{"Gray51", 130, 130, 130},
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{"Gray52", 133, 133, 133},
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{"Gray53", 135, 135, 135},
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{"Gray54", 138, 138, 138},
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{"Gray55", 140, 140, 140},
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{"Gray56", 143, 143, 143},
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{"Gray57", 145, 145, 145},
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{"Gray58", 148, 148, 148},
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{"Gray59", 150, 150, 150},
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{"Gray6", 15, 15, 15},
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{"Gray60", 153, 153, 153},
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{"Gray61", 156, 156, 156},
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{"Gray62", 158, 158, 158},
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{"Gray63", 161, 161, 161},
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{"Gray64", 163, 163, 163},
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{"Gray65", 166, 166, 166},
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{"Gray66", 168, 168, 168},
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{"Gray67", 171, 171, 171},
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{"Gray68", 173, 173, 173},
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{"Gray69", 176, 176, 176},
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{"Gray7", 18, 18, 18},
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{"Gray70", 179, 179, 179},
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{"Gray71", 181, 181, 181},
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{"Gray72", 184, 184, 184},
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{"Gray73", 186, 186, 186},
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{"Gray74", 189, 189, 189},
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{"Gray75", 191, 191, 191},
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{"Gray76", 194, 194, 194},
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{"Gray77", 196, 196, 196},
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{"Gray78", 199, 199, 199},
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{"Gray79", 201, 201, 201},
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{"Gray8", 20, 20, 20},
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{"Gray80", 204, 204, 204},
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{"Gray81", 207, 207, 207},
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{"Gray82", 209, 209, 209},
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{"Gray83", 212, 212, 212},
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{"Gray84", 214, 214, 214},
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{"Gray85", 217, 217, 217},
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{"Gray86", 219, 219, 219},
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{"Gray87", 222, 222, 222},
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{"Gray88", 224, 224, 224},
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{"Gray89", 227, 227, 227},
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{"Gray9", 23, 23, 23},
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{"Gray90", 229, 229, 229},
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{"Gray91", 232, 232, 232},
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{"Gray92", 235, 235, 235},
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{"Gray93", 237, 237, 237},
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{"Gray94", 240, 240, 240},
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{"Gray95", 242, 242, 242},
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{"Gray96", 245, 245, 245},
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{"Gray97", 247, 247, 247},
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{"Gray98", 250, 250, 250},
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{"Gray99", 252, 252, 252},
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{"Green", 0, 255, 0},
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{"GreenYellow", 173, 255, 47},
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{"honeydew", 240, 255, 240},
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{"HotPink", 255, 105, 180},
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{"IndianRed", 107, 57, 57},
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{"ivory", 255, 255, 240},
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{"Khaki", 179, 179, 126},
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{"lavender", 230, 230, 250},
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{"LavenderBlush", 255, 240, 245},
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{"LawnGreen", 124, 252, 0},
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{"LemonChiffon", 255, 250, 205},
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{"LightBlue", 176, 226, 255},
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{"LightCoral", 240, 128, 128},
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{"LightCyan", 224, 255, 255},
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{"LightGoldenrod", 238, 221, 130},
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{"LightGoldenrodYellow", 250, 250, 210},
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{"LightGray", 168, 168, 168},
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{"LightPink", 255, 182, 193},
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{"LightSalmon", 255, 160, 122},
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{"LightSeaGreen", 32, 178, 170},
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{"LightSkyBlue", 135, 206, 250},
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{"LightSlateBlue", 132, 112, 255},
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{"LightSlateGray", 119, 136, 153},
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{"LightSteelBlue", 124, 152, 211},
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{"LightYellow", 255, 255, 224},
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{"LimeGreen", 0, 175, 20},
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{"linen", 250, 240, 230},
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{"Magenta", 255, 0, 255},
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{"Maroon", 143, 0, 82},
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{"MediumAquamarine", 0, 147, 143},
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{"MediumBlue", 50, 50, 204},
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{"MediumForestGreen", 50, 129, 75},
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{"MediumGoldenrod", 209, 193, 102},
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{"MediumOrchid", 189, 82, 189},
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{"MediumPurple", 147, 112, 219},
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{"MediumSeaGreen", 52, 119, 102},
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{"MediumSlateBlue", 106, 106, 141},
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{"MediumSpringGreen", 35, 142, 35},
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{"MediumTurquoise", 0, 210, 210},
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{"MediumVioletRed", 213, 32, 121},
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{"MidnightBlue", 47, 47, 100},
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{"MintCream", 245, 255, 250},
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{"MistyRose", 255, 228, 225},
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{"moccasin", 255, 228, 181},
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{"NavajoWhite", 255, 222, 173},
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{"Navy", 35, 35, 117},
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{"NavyBlue", 35, 35, 117},
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{"OldLace", 253, 245, 230},
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{"OliveDrab", 107, 142, 35},
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{"Orange", 255, 135, 0},
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{"OrangeRed", 255, 69, 0},
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{"Orchid", 239, 132, 239},
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{"PaleGoldenrod", 238, 232, 170},
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{"PaleGreen", 115, 222, 120},
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{"PaleTurquoise", 175, 238, 238},
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{"PaleVioletRed", 219, 112, 147},
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{"PapayaWhip", 255, 239, 213},
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{"PeachPuff", 255, 218, 185},
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{"peru", 205, 133, 63},
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{"Pink", 255, 181, 197},
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{"Plum", 197, 72, 155},
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{"PowderBlue", 176, 224, 230},
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{"purple", 160, 32, 240},
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{"Red", 255, 0, 0},
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{"RosyBrown", 188, 143, 143},
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{"RoyalBlue", 65, 105, 225},
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{"SaddleBrown", 139, 69, 19},
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{"Salmon", 233, 150, 122},
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{"SandyBrown", 244, 164, 96},
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{"SeaGreen", 82, 149, 132},
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{"seashell", 255, 245, 238},
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{"Sienna", 150, 82, 45},
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{"SkyBlue", 114, 159, 255},
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{"SlateBlue", 126, 136, 171},
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{"SlateGray", 112, 128, 144},
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{"snow", 255, 250, 250},
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{"SpringGreen", 65, 172, 65},
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{"SteelBlue", 84, 112, 170},
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{"Tan", 222, 184, 135},
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{"Thistle", 216, 191, 216},
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{"tomato", 255, 99, 71},
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{"Transparent", 0, 0, 1},
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{"Turquoise", 25, 204, 223},
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{"Violet", 156, 62, 206},
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{"VioletRed", 243, 62, 150},
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{"Wheat", 245, 222, 179},
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{"White", 255, 255, 255},
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{"WhiteSmoke", 245, 245, 245},
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{"Yellow", 255, 255, 0},
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{"YellowGreen", 50, 216, 56}
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};
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/* Hash table to look up colors from pixel strings */
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#define STARTING_HASH_SIZE 256
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struct hash_entry
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{
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char key[10];
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rtgui_color_t color;
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struct hash_entry *next;
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};
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struct color_hash
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{
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struct hash_entry **table;
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struct hash_entry *entries; /* array of all entries */
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struct hash_entry *next_free;
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int size;
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int maxnum;
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};
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static int hash_key(const char *key, int cpp, int size)
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{
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int hash;
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hash = 0;
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while (cpp-- > 0)
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{
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hash = hash * 33 + *key++;
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}
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return hash & (size - 1);
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}
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static struct color_hash *create_colorhash(int maxnum)
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{
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int bytes, s;
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struct color_hash *hash;
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/* we know how many entries we need, so we can allocate
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everything here */
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hash = rtgui_malloc(sizeof *hash);
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if (!hash) return RT_NULL;
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/* use power-of-2 sized hash table for decoding speed */
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for (s = STARTING_HASH_SIZE; s < maxnum; s <<= 1) ;
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hash->size = s;
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hash->maxnum = maxnum;
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bytes = hash->size *sizeof(struct hash_entry **);
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hash->entries = RT_NULL; /* in case rt_malloc fails */
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hash->table = rtgui_malloc(bytes);
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if (!hash->table) return RT_NULL;
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rt_memset(hash->table, 0, bytes);
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hash->entries = rtgui_malloc(maxnum *sizeof(struct hash_entry));
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if (!hash->entries) return RT_NULL;
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hash->next_free = hash->entries;
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return hash;
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}
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static int add_colorhash(struct color_hash *hash,
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char *key, int cpp, rtgui_color_t *color)
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{
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int index = hash_key(key, cpp, hash->size);
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struct hash_entry *e = hash->next_free++;
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e->color = *color;
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rt_memset(e->key, 0, sizeof(e->key));
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rt_strncpy(e->key, key, cpp);
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e->next = hash->table[index];
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hash->table[index] = e;
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return 1;
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}
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static void get_colorhash(struct color_hash *hash, const char *key, int cpp, rtgui_color_t *c)
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{
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struct hash_entry *entry = hash->table[hash_key(key, cpp, hash->size)];
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while (entry)
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{
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if (rt_memcmp(key, entry->key, cpp) == 0)
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{
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*c = entry->color;
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return;
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}
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entry = entry->next;
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}
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return ; /* garbage in - garbage out */
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}
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static void free_colorhash(struct color_hash *hash)
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{
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if (hash && hash->table)
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{
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rtgui_free(hash->table);
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rtgui_free(hash->entries);
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rtgui_free(hash);
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}
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}
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#if defined(_MSC_VER) || defined(__CC_ARM)
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int strcasecmp(const char *s1, const char *s2)
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{
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register unsigned int x2;
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register unsigned int x1;
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while (1)
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{
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x2 = *s2 - 'A';
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if (x2 < 26u) x2 += 32;
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x1 = *s1 - 'A';
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if (x1 < 26u) x1 += 32;
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s1++;
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s2++;
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if (x2 != x1)
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break;
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if (x1 == (unsigned int) - 'A')
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break;
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}
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return x1 - x2;
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}
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#endif
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static int hex2int(char *str)
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{
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int i = 0;
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int r = 0;
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for (i = 0; i < 2; i++)
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{
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if (str[i] >= '0' && str[i] <= '9') r += str[i] - '0';
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else if (str[i] >= 'a' && str[i] <= 'f') r += str[i] - 'a' + 10;
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else if (str[i] >= 'A' && str[i] <= 'F') r += str[i] - 'A' + 10;
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if (!i) r *= 16;
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}
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return r;
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}
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void rtgui_image_xpm_init()
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{
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/* register xpm engine */
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rtgui_image_register_engine(&rtgui_image_xpm_engine);
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}
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static rt_bool_t rtgui_image_xpm_check(struct rtgui_filerw *file)
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{
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#if 0
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rt_uint8_t buffer[XPM_MAGIC_LEN];
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rt_size_t start;
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rt_bool_t result;
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result = RT_FALSE;
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start = rtgui_filerw_tell(file);
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/* seek to the begining of file */
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if (start != 0) rtgui_filerw_seek(file, 0, SEEK_SET);
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rtgui_filerw_read(file, &buffer[0], XPM_MAGIC_LEN, 1);
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if (rt_memcmp(buffer, "/* XPM */", (rt_ubase_t)XPM_MAGIC_LEN) == 0)
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result = RT_TRUE;
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rtgui_filerw_seek(file, start, SEEK_SET);
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return result;
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#else
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/* we can not check image type for memory file */
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return RT_TRUE;
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#endif
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}
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static rt_bool_t rtgui_image_xpm_load(struct rtgui_image *image, struct rtgui_filerw *file, rt_bool_t load)
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{
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const char **xpm;
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const char *buf;
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const char *buf_tmp;
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int w, h;
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int colors = 0;
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int colors_pp = 0;
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int i, j;
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/* color hash table */
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struct color_hash *colors_table = RT_NULL;
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if (image == RT_NULL) return RT_FALSE;
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xpm = (const char **)rtgui_filerw_mem_getdata(file);
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if (xpm == RT_NULL) return RT_FALSE;
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/* set image engine */
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image->engine = &rtgui_image_xpm_engine;
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/* parse xpm image */
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sscanf(xpm[0], "%d %d %d %d", &w, &h, &colors, &colors_pp);
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image->w = w;
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image->h = h;
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/* build color table */
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colors_table = create_colorhash(colors);
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if (!colors_table)
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{
|
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return RT_FALSE;
|
|
}
|
|
|
|
for (i = 0; i < colors; i++)
|
|
{
|
|
char color_name[10];
|
|
rtgui_color_t c = 0;
|
|
|
|
buf = xpm[i + 1];
|
|
|
|
for (j = 0; j < colors_pp; j++)
|
|
{
|
|
color_name[j] = buf[j];
|
|
}
|
|
color_name[j] = '\0';
|
|
|
|
/* build rtgui_color */
|
|
if ((buf_tmp = strstr(buf, "c #")) != RT_NULL)
|
|
{
|
|
char color_hex[10];
|
|
|
|
/* hexadecimal color value */
|
|
sscanf(buf_tmp, "c #%s", color_hex);
|
|
|
|
c = RTGUI_ARGB(0, hex2int(color_hex),
|
|
hex2int(color_hex + 2),
|
|
hex2int(color_hex + 4));
|
|
}
|
|
else if ((buf_tmp = strstr(buf, "c ")) != RT_NULL)
|
|
{
|
|
int k;
|
|
|
|
/* color name */
|
|
char rgbname[30];
|
|
|
|
sscanf(buf_tmp, "c %s", rgbname);
|
|
|
|
if (strcasecmp(rgbname, "None") == 0)
|
|
{
|
|
goto color_none;
|
|
}
|
|
|
|
for (k = 0; k < 234; k++)
|
|
{
|
|
if (strcasecmp(rgbname, rgbRecord[k].name) == 0)
|
|
{
|
|
c = RTGUI_ARGB(0, rgbRecord[k].r,
|
|
rgbRecord[k].g,
|
|
rgbRecord[k].b);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
color_none:
|
|
c = RTGUI_RGB(0, 0, 0);
|
|
}
|
|
|
|
/* add to color hash table */
|
|
add_colorhash(colors_table, color_name, colors_pp, &c);
|
|
}
|
|
|
|
/* build rgb pixel data */
|
|
image->data = (rt_uint8_t *) rtgui_malloc(image->w * image->h * sizeof(rtgui_color_t));
|
|
memset(image->data, 0, image->w * image->h * sizeof(rtgui_color_t));
|
|
|
|
{
|
|
rtgui_color_t *ptr = (rtgui_color_t *) image->data;
|
|
|
|
for (h = 0; h < image->h; h++)
|
|
{
|
|
buf = xpm[colors + 1 + h];
|
|
for (w = 0; w < image->w; w++, buf += colors_pp)
|
|
{
|
|
get_colorhash(colors_table, buf, colors_pp, ptr);
|
|
|
|
ptr ++;
|
|
}
|
|
}
|
|
}
|
|
|
|
free_colorhash(colors_table);
|
|
rtgui_filerw_close(file);
|
|
|
|
return RT_TRUE;
|
|
}
|
|
|
|
static void rtgui_image_xpm_unload(struct rtgui_image *image)
|
|
{
|
|
if (image != RT_NULL)
|
|
{
|
|
/* release data */
|
|
rtgui_free(image->data);
|
|
image->data = RT_NULL;
|
|
}
|
|
}
|
|
|
|
static void rtgui_image_xpm_blit(struct rtgui_image *image, struct rtgui_dc *dc, struct rtgui_rect *rect)
|
|
{
|
|
rt_uint16_t x, y;
|
|
rtgui_color_t *ptr;
|
|
|
|
RT_ASSERT(image != RT_NULL && dc != RT_NULL && rect != RT_NULL);
|
|
RT_ASSERT(image->data != RT_NULL);
|
|
|
|
ptr = (rtgui_color_t *) image->data;
|
|
|
|
/* draw each point within dc */
|
|
for (y = 0; y < image->h; y ++)
|
|
{
|
|
for (x = 0; x < image->w; x++)
|
|
{
|
|
/* not alpha */
|
|
if ((*ptr >> 24) != 255)
|
|
{
|
|
rtgui_dc_draw_color_point(dc, x + rect->x1, y + rect->y1, *ptr);
|
|
}
|
|
|
|
/* move to next color buffer */
|
|
ptr ++;
|
|
}
|
|
}
|
|
}
|
|
#endif
|