SSD1306 OLED display driver  1.7.8
This library is developed to control SSD1306/SSD1331/SSD1351/IL9163/PCD8554 RGB i2c/spi LED displays
ssd1306_menu.c
1 /*
2  MIT License
3 
4  Copyright (c) 2017-2018, Alexey Dynda
5 
6  Permission is hereby granted, free of charge, to any person obtaining a copy
7  of this software and associated documentation files (the "Software"), to deal
8  in the Software without restriction, including without limitation the rights
9  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  copies of the Software, and to permit persons to whom the Software is
11  furnished to do so, subject to the following conditions:
12 
13  The above copyright notice and this permission notice shall be included in all
14  copies or substantial portions of the Software.
15 
16  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  SOFTWARE.
23 */
24 
25 #include "font6x8.h"
26 #include "ssd1306.h"
27 
28 #ifndef min
29 #define min(x,y) ((x)<(y)?(x):(y))
30 #endif
31 
32 #ifndef max
33 #define max(x,y) ((x)>(y)?(x):(y))
34 #endif
35 
36 static uint8_t getMaxScreenItems(void)
37 {
38  return (ssd1306_displayHeight() >> 3) - 2;
39 }
40 
41 void ssd1306_createMenu(SAppMenu *menu, const char **items, uint8_t count)
42 {
43  menu->items = items;
44  menu->count = count;
45  menu->selection = 0;
46  menu->oldSelection = 0;
47  menu->scrollPosition = 0;
48 }
49 
50 static uint8_t calculateScrollPosition(SAppMenu *menu, uint8_t selection)
51 {
52  if ( selection < menu->scrollPosition )
53  {
54  return selection;
55  }
56  else if ( selection - menu->scrollPosition > getMaxScreenItems() - 1)
57  {
58  return selection - getMaxScreenItems() + 1;
59  }
60  return menu->scrollPosition;
61 }
62 
63 static void drawMenuItem(SAppMenu *menu, uint8_t index)
64 {
65  if (index == menu->selection)
66  {
68  }
69  else
70  {
72  }
73  ssd1306_printFixed(8, (index - menu->scrollPosition + 1)*8, menu->items[index], STYLE_NORMAL );
75 }
76 
77 static void drawMenuItem8(SAppMenu *menu, uint8_t index)
78 {
79  if (index == menu->selection)
80  {
82  }
83  else
84  {
86  }
87  ssd1306_printFixed8(8, (index - menu->scrollPosition + 1)*8, menu->items[index], STYLE_NORMAL );
89 }
90 
92 {
94  menu->scrollPosition = calculateScrollPosition( menu, menu->selection );
95  for (uint8_t i = menu->scrollPosition; i < min(menu->count, menu->scrollPosition + getMaxScreenItems()); i++)
96  {
97  drawMenuItem(menu, i);
98  }
99  menu->oldSelection = menu->selection;
100 }
101 
103 {
105  menu->scrollPosition = calculateScrollPosition( menu, menu->selection );
106  for (uint8_t i = menu->scrollPosition; i < min(menu->count, menu->scrollPosition + getMaxScreenItems()); i++)
107  {
108  drawMenuItem8(menu, i);
109  }
110  menu->oldSelection = menu->selection;
111 }
112 
114 {
115  if (menu->selection != menu->oldSelection)
116  {
117  uint8_t scrollPosition = calculateScrollPosition( menu, menu->selection );
118  if ( scrollPosition != menu->scrollPosition )
119  {
121  ssd1306_showMenu(menu);
122  }
123  else
124  {
125  drawMenuItem(menu, menu->oldSelection);
126  drawMenuItem(menu, menu->selection);
127  menu->oldSelection = menu->selection;
128  }
129  }
130 }
131 
133 {
134  if (menu->selection != menu->oldSelection)
135  {
136  uint8_t scrollPosition = calculateScrollPosition( menu, menu->selection );
137  if ( scrollPosition != menu->scrollPosition )
138  {
140  ssd1306_showMenu8(menu);
141  }
142  else
143  {
144  drawMenuItem8(menu, menu->oldSelection);
145  drawMenuItem8(menu, menu->selection);
146  menu->oldSelection = menu->selection;
147  }
148  }
149 }
150 
152 {
153  return menu->selection;
154 }
155 
157 {
158  if (menu->selection < menu->count - 1)
159  {
160  menu->selection++;
161  }
162  else
163  {
164  menu->selection = 0;
165  }
166 }
167 
169 {
170  if (menu->selection > 0)
171  {
172  menu->selection--;
173  }
174  else
175  {
176  menu->selection = menu->count - 1;
177  }
178 }
void ssd1306_drawRect8(lcdint_t x1, lcdint_t y1, lcdint_t x2, lcdint_t y2)
Definition: ssd1306_8bit.c:184
uint8_t ssd1306_printFixed8(lcdint_t x, lcdint_t y, const char *ch, EFontStyle style)
Definition: ssd1306_8bit.c:329
void ssd1306_positiveMode()
Definition: ssd1306_1bit.c:875
void ssd1306_createMenu(SAppMenu *menu, const char **items, uint8_t count)
Definition: ssd1306_menu.c:41
uint8_t ssd1306_printFixed(uint8_t xpos, uint8_t y, const char *ch, EFontStyle style)
Definition: ssd1306_1bit.c:78
void ssd1306_drawRect(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2)
Definition: ssd1306_1bit.c:636
uint8_t ssd1306_menuSelection(SAppMenu *menu)
Definition: ssd1306_menu.c:151
void ssd1306_showMenu(SAppMenu *menu)
Definition: ssd1306_menu.c:91
void ssd1306_updateMenu(SAppMenu *menu)
Definition: ssd1306_menu.c:113
uint8_t ssd1306_displayWidth(void)
uint8_t selection
currently selected item. Internally updated.
Definition: ssd1306_1bit.h:411
uint8_t scrollPosition
position of menu scrolling. Internally updated
Definition: ssd1306_1bit.h:415
#define min(a, b)
void ssd1306_menuUp(SAppMenu *menu)
Definition: ssd1306_menu.c:168
uint8_t count
count of menu items in the menu
Definition: ssd1306_1bit.h:409
void ssd1306_updateMenu8(SAppMenu *menu)
Definition: ssd1306_menu.c:132
void ssd1306_menuDown(SAppMenu *menu)
Definition: ssd1306_menu.c:156
void ssd1306_clearScreen8(void)
Definition: ssd1306_8bit.c:107
uint8_t ssd1306_displayHeight(void)
void ssd1306_showMenu8(SAppMenu *menu)
Definition: ssd1306_menu.c:102
void ssd1306_clearScreen()
Definition: ssd1306_1bit.c:64
void ssd1306_negativeMode()
Definition: ssd1306_1bit.c:870
uint8_t oldSelection
selected item, when last redraw operation was performed. Internally updated.
Definition: ssd1306_1bit.h:413
const char ** items
list of menu items of the menu
Definition: ssd1306_1bit.h:407