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Dependencies:   mbed Blynk

u8glibARM/u8g_virtual_screen.c@0:d8f4c441e032, 2016-06-10 (annotated)

Committer:
lixianyu
Date:
Fri Jun 10 15:20:20 2016 +0000
Revision:
0:d8f4c441e032
u8glib???????????i2c???

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lixianyu 0:d8f4c441e032 1 /*
lixianyu 0:d8f4c441e032 2
lixianyu 0:d8f4c441e032 3 u8g_virtual_screen.c
lixianyu 0:d8f4c441e032 4
lixianyu 0:d8f4c441e032 5 Universal 8bit Graphics Library
lixianyu 0:d8f4c441e032 6
lixianyu 0:d8f4c441e032 7 Copyright (c) 2012, olikraus@gmail.com
lixianyu 0:d8f4c441e032 8 All rights reserved.
lixianyu 0:d8f4c441e032 9
lixianyu 0:d8f4c441e032 10 Redistribution and use in source and binary forms, with or without modification,
lixianyu 0:d8f4c441e032 11 are permitted provided that the following conditions are met:
lixianyu 0:d8f4c441e032 12
lixianyu 0:d8f4c441e032 13 * Redistributions of source code must retain the above copyright notice, this list
lixianyu 0:d8f4c441e032 14 of conditions and the following disclaimer.
lixianyu 0:d8f4c441e032 15
lixianyu 0:d8f4c441e032 16 * Redistributions in binary form must reproduce the above copyright notice, this
lixianyu 0:d8f4c441e032 17 list of conditions and the following disclaimer in the documentation and/or other
lixianyu 0:d8f4c441e032 18 materials provided with the distribution.
lixianyu 0:d8f4c441e032 19
lixianyu 0:d8f4c441e032 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
lixianyu 0:d8f4c441e032 21 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
lixianyu 0:d8f4c441e032 22 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
lixianyu 0:d8f4c441e032 23 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
lixianyu 0:d8f4c441e032 24 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
lixianyu 0:d8f4c441e032 25 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
lixianyu 0:d8f4c441e032 26 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
lixianyu 0:d8f4c441e032 27 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
lixianyu 0:d8f4c441e032 28 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
lixianyu 0:d8f4c441e032 29 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
lixianyu 0:d8f4c441e032 30 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
lixianyu 0:d8f4c441e032 31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
lixianyu 0:d8f4c441e032 32 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
lixianyu 0:d8f4c441e032 33
lixianyu 0:d8f4c441e032 34
lixianyu 0:d8f4c441e032 35 */
lixianyu 0:d8f4c441e032 36
lixianyu 0:d8f4c441e032 37 #include "u8g.h"
lixianyu 0:d8f4c441e032 38
lixianyu 0:d8f4c441e032 39 struct _u8g_vs_t
lixianyu 0:d8f4c441e032 40 {
lixianyu 0:d8f4c441e032 41 u8g_uint_t x;
lixianyu 0:d8f4c441e032 42 u8g_uint_t y;
lixianyu 0:d8f4c441e032 43 u8g_t *u8g;
lixianyu 0:d8f4c441e032 44 };
lixianyu 0:d8f4c441e032 45 typedef struct _u8g_vs_t u8g_vs_t;
lixianyu 0:d8f4c441e032 46
lixianyu 0:d8f4c441e032 47 #define U8g_VS_MAX 4
lixianyu 0:d8f4c441e032 48 uint8_t u8g_vs_cnt = 0;
lixianyu 0:d8f4c441e032 49 u8g_vs_t u8g_vs_list[U8g_VS_MAX];
lixianyu 0:d8f4c441e032 50 uint8_t u8g_vs_current;
lixianyu 0:d8f4c441e032 51 u8g_uint_t u8g_vs_width;
lixianyu 0:d8f4c441e032 52 u8g_uint_t u8g_vs_height;
lixianyu 0:d8f4c441e032 53
lixianyu 0:d8f4c441e032 54 uint8_t u8g_dev_vs_fn(u8g_t *u8g, u8g_dev_t *dev, uint8_t msg, void *arg)
lixianyu 0:d8f4c441e032 55 {
lixianyu 0:d8f4c441e032 56 switch(msg)
lixianyu 0:d8f4c441e032 57 {
lixianyu 0:d8f4c441e032 58 default:
lixianyu 0:d8f4c441e032 59 {
lixianyu 0:d8f4c441e032 60 uint8_t i;
lixianyu 0:d8f4c441e032 61 for( i = 0; i < u8g_vs_cnt; i++ )
lixianyu 0:d8f4c441e032 62 {
lixianyu 0:d8f4c441e032 63 u8g_call_dev_fn(u8g_vs_list[i].u8g, u8g_vs_list[i].u8g->dev, msg, arg);
lixianyu 0:d8f4c441e032 64 }
lixianyu 0:d8f4c441e032 65 }
lixianyu 0:d8f4c441e032 66 return 1;
lixianyu 0:d8f4c441e032 67 case U8G_DEV_MSG_PAGE_FIRST:
lixianyu 0:d8f4c441e032 68 u8g_vs_current = 0;
lixianyu 0:d8f4c441e032 69 if ( u8g_vs_cnt != 0 )
lixianyu 0:d8f4c441e032 70 return u8g_call_dev_fn(u8g_vs_list[u8g_vs_current].u8g, u8g_vs_list[u8g_vs_current].u8g->dev, msg, arg);
lixianyu 0:d8f4c441e032 71 return 0;
lixianyu 0:d8f4c441e032 72 case U8G_DEV_MSG_PAGE_NEXT:
lixianyu 0:d8f4c441e032 73 {
lixianyu 0:d8f4c441e032 74 uint8_t ret = 0;
lixianyu 0:d8f4c441e032 75 if ( u8g_vs_cnt != 0 )
lixianyu 0:d8f4c441e032 76 ret = u8g_call_dev_fn(u8g_vs_list[u8g_vs_current].u8g, u8g_vs_list[u8g_vs_current].u8g->dev, msg, arg);
lixianyu 0:d8f4c441e032 77 if ( ret != 0 )
lixianyu 0:d8f4c441e032 78 return ret;
lixianyu 0:d8f4c441e032 79 u8g_vs_current++; /* next device */
lixianyu 0:d8f4c441e032 80 if ( u8g_vs_current >= u8g_vs_cnt ) /* reached end? */
lixianyu 0:d8f4c441e032 81 return 0;
lixianyu 0:d8f4c441e032 82 return u8g_call_dev_fn(u8g_vs_list[u8g_vs_current].u8g, u8g_vs_list[u8g_vs_current].u8g->dev, U8G_DEV_MSG_PAGE_FIRST, arg);
lixianyu 0:d8f4c441e032 83 }
lixianyu 0:d8f4c441e032 84 case U8G_DEV_MSG_GET_WIDTH:
lixianyu 0:d8f4c441e032 85 *((u8g_uint_t *)arg) = u8g_vs_width;
lixianyu 0:d8f4c441e032 86 break;
lixianyu 0:d8f4c441e032 87 case U8G_DEV_MSG_GET_HEIGHT:
lixianyu 0:d8f4c441e032 88 *((u8g_uint_t *)arg) = u8g_vs_height;
lixianyu 0:d8f4c441e032 89 break;
lixianyu 0:d8f4c441e032 90 case U8G_DEV_MSG_GET_PAGE_BOX:
lixianyu 0:d8f4c441e032 91 if ( u8g_vs_current < u8g_vs_cnt )
lixianyu 0:d8f4c441e032 92 {
lixianyu 0:d8f4c441e032 93 u8g_call_dev_fn(u8g_vs_list[u8g_vs_current].u8g, u8g_vs_list[u8g_vs_current].u8g->dev, msg, arg);
lixianyu 0:d8f4c441e032 94 ((u8g_box_t *)arg)->x0 += u8g_vs_list[u8g_vs_current].x;
lixianyu 0:d8f4c441e032 95 ((u8g_box_t *)arg)->x1 += u8g_vs_list[u8g_vs_current].x;
lixianyu 0:d8f4c441e032 96 ((u8g_box_t *)arg)->y0 += u8g_vs_list[u8g_vs_current].y;
lixianyu 0:d8f4c441e032 97 ((u8g_box_t *)arg)->y1 += u8g_vs_list[u8g_vs_current].y;
lixianyu 0:d8f4c441e032 98 }
lixianyu 0:d8f4c441e032 99 else
lixianyu 0:d8f4c441e032 100 {
lixianyu 0:d8f4c441e032 101 ((u8g_box_t *)arg)->x0 = 0;
lixianyu 0:d8f4c441e032 102 ((u8g_box_t *)arg)->x1 = 0;
lixianyu 0:d8f4c441e032 103 ((u8g_box_t *)arg)->y0 = 0;
lixianyu 0:d8f4c441e032 104 ((u8g_box_t *)arg)->y1 = 0;
lixianyu 0:d8f4c441e032 105 }
lixianyu 0:d8f4c441e032 106 return 1;
lixianyu 0:d8f4c441e032 107 case U8G_DEV_MSG_SET_PIXEL:
lixianyu 0:d8f4c441e032 108 case U8G_DEV_MSG_SET_8PIXEL:
lixianyu 0:d8f4c441e032 109 if ( u8g_vs_current < u8g_vs_cnt )
lixianyu 0:d8f4c441e032 110 {
lixianyu 0:d8f4c441e032 111 ((u8g_dev_arg_pixel_t *)arg)->x -= u8g_vs_list[u8g_vs_current].x;
lixianyu 0:d8f4c441e032 112 ((u8g_dev_arg_pixel_t *)arg)->y -= u8g_vs_list[u8g_vs_current].y;
lixianyu 0:d8f4c441e032 113 return u8g_call_dev_fn(u8g_vs_list[u8g_vs_current].u8g, u8g_vs_list[u8g_vs_current].u8g->dev, msg, arg);
lixianyu 0:d8f4c441e032 114 }
lixianyu 0:d8f4c441e032 115 break;
lixianyu 0:d8f4c441e032 116 }
lixianyu 0:d8f4c441e032 117 return 1;
lixianyu 0:d8f4c441e032 118 }
lixianyu 0:d8f4c441e032 119
lixianyu 0:d8f4c441e032 120
lixianyu 0:d8f4c441e032 121
lixianyu 0:d8f4c441e032 122 u8g_dev_t u8g_dev_vs = { u8g_dev_vs_fn, NULL, NULL };
lixianyu 0:d8f4c441e032 123
lixianyu 0:d8f4c441e032 124 void u8g_SetVirtualScreenDimension(u8g_t *vs_u8g, u8g_uint_t width, u8g_uint_t height)
lixianyu 0:d8f4c441e032 125 {
lixianyu 0:d8f4c441e032 126 if ( vs_u8g->dev != &u8g_dev_vs )
lixianyu 0:d8f4c441e032 127 return; /* abort if there is no a virtual screen device */
lixianyu 0:d8f4c441e032 128 u8g_vs_width = width;
lixianyu 0:d8f4c441e032 129 u8g_vs_height = height;
lixianyu 0:d8f4c441e032 130 }
lixianyu 0:d8f4c441e032 131
lixianyu 0:d8f4c441e032 132 uint8_t u8g_AddToVirtualScreen(u8g_t *vs_u8g, u8g_uint_t x, u8g_uint_t y, u8g_t *child_u8g)
lixianyu 0:d8f4c441e032 133 {
lixianyu 0:d8f4c441e032 134 if ( vs_u8g->dev != &u8g_dev_vs )
lixianyu 0:d8f4c441e032 135 return 0; /* abort if there is no a virtual screen device */
lixianyu 0:d8f4c441e032 136 if ( u8g_vs_cnt >= U8g_VS_MAX )
lixianyu 0:d8f4c441e032 137 return 0; /* maximum number of child u8g's reached */
lixianyu 0:d8f4c441e032 138 u8g_vs_list[u8g_vs_cnt].u8g = child_u8g;
lixianyu 0:d8f4c441e032 139 u8g_vs_list[u8g_vs_cnt].x = x;
lixianyu 0:d8f4c441e032 140 u8g_vs_list[u8g_vs_cnt].y = y;
lixianyu 0:d8f4c441e032 141 u8g_vs_cnt++;
lixianyu 0:d8f4c441e032 142 return 1;
lixianyu 0:d8f4c441e032 143 }
lixianyu 0:d8f4c441e032 144
lixianyu 0:d8f4c441e032 145