SSD1306 OLED display driver  1.7.2
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 #include "ssd1331_api.h"
28 
29 #ifndef min
30 #define min(x,y) ((x)<(y)?(x):(y))
31 #endif
32 
33 #ifndef max
34 #define max(x,y) ((x)>(y)?(x):(y))
35 #endif
36 
37 static uint8_t getMaxScreenItems(void)
38 {
39  return (ssd1306_displayHeight() >> 3) - 2;
40 }
41 
42 void ssd1306_createMenu(SAppMenu *menu, const char **items, uint8_t count)
43 {
44  menu->items = items;
45  menu->count = count;
46  menu->selection = 0;
47  menu->oldSelection = 0;
48  menu->scrollPosition = 0;
49 }
50 
51 static uint8_t calculateScrollPosition(SAppMenu *menu, uint8_t selection)
52 {
53  if ( selection < menu->scrollPosition )
54  {
55  return selection;
56  }
57  else if ( selection - menu->scrollPosition > getMaxScreenItems() - 1)
58  {
59  return selection - getMaxScreenItems() + 1;
60  }
61  return menu->scrollPosition;
62 }
63 
64 static void drawMenuItem(SAppMenu *menu, uint8_t index)
65 {
66  if (index == menu->selection)
67  {
69  }
70  else
71  {
73  }
74  ssd1306_printFixed(8, (index - menu->scrollPosition + 1)*8, menu->items[index], STYLE_NORMAL );
76 }
77 
78 static void drawMenuItem8(SAppMenu *menu, uint8_t index)
79 {
80  if (index == menu->selection)
81  {
83  }
84  else
85  {
87  }
88  ssd1331_printFixed8(8, (index - menu->scrollPosition + 1)*8, menu->items[index], STYLE_NORMAL );
90 }
91 
93 {
95  menu->scrollPosition = calculateScrollPosition( menu, menu->selection );
96  for (uint8_t i = menu->scrollPosition; i < min(menu->count, menu->scrollPosition + getMaxScreenItems()); i++)
97  {
98  drawMenuItem(menu, i);
99  }
100  menu->oldSelection = menu->selection;
101 }
102 
104 {
106  menu->scrollPosition = calculateScrollPosition( menu, menu->selection );
107  for (uint8_t i = menu->scrollPosition; i < min(menu->count, menu->scrollPosition + getMaxScreenItems()); i++)
108  {
109  drawMenuItem8(menu, i);
110  }
111  menu->oldSelection = menu->selection;
112 }
113 
115 {
116  if (menu->selection != menu->oldSelection)
117  {
118  uint8_t scrollPosition = calculateScrollPosition( menu, menu->selection );
119  if ( scrollPosition != menu->scrollPosition )
120  {
122  ssd1306_showMenu(menu);
123  }
124  else
125  {
126  drawMenuItem(menu, menu->oldSelection);
127  drawMenuItem(menu, menu->selection);
128  menu->oldSelection = menu->selection;
129  }
130  }
131 }
132 
134 {
135  if (menu->selection != menu->oldSelection)
136  {
137  uint8_t scrollPosition = calculateScrollPosition( menu, menu->selection );
138  if ( scrollPosition != menu->scrollPosition )
139  {
141  ssd1331_showMenu8(menu);
142  }
143  else
144  {
145  drawMenuItem8(menu, menu->oldSelection);
146  drawMenuItem8(menu, menu->selection);
147  menu->oldSelection = menu->selection;
148  }
149  }
150 }
151 
153 {
154  return menu->selection;
155 }
156 
158 {
159  if (menu->selection < menu->count - 1)
160  {
161  menu->selection++;
162  }
163  else
164  {
165  menu->selection = 0;
166  }
167 }
168 
170 {
171  if (menu->selection > 0)
172  {
173  menu->selection--;
174  }
175  else
176  {
177  menu->selection = menu->count - 1;
178  }
179 }
void ssd1306_positiveMode()
Definition: ssd1306_1bit.c:851
void ssd1306_createMenu(SAppMenu *menu, const char **items, uint8_t count)
Definition: ssd1306_menu.c:42
uint8_t ssd1306_printFixed(uint8_t xpos, uint8_t y, const char *ch, EFontStyle style)
Definition: ssd1306_1bit.c:75
void ssd1331_clearScreen8(void)
Definition: ssd1306_8bit.c:144
void ssd1306_drawRect(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2)
Definition: ssd1306_1bit.c:612
uint8_t ssd1306_menuSelection(SAppMenu *menu)
Definition: ssd1306_menu.c:152
void ssd1306_showMenu(SAppMenu *menu)
Definition: ssd1306_menu.c:92
void ssd1306_updateMenu(SAppMenu *menu)
Definition: ssd1306_menu.c:114
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:169
uint8_t count
count of menu items in the menu
Definition: ssd1306_1bit.h:409
void ssd1331_drawRect8(lcdint_t x1, lcdint_t y1, lcdint_t x2, lcdint_t y2)
Definition: ssd1306_8bit.c:221
void ssd1306_menuDown(SAppMenu *menu)
Definition: ssd1306_menu.c:157
void ssd1331_showMenu8(SAppMenu *menu)
Definition: ssd1306_menu.c:103
void ssd1331_updateMenu8(SAppMenu *menu)
Definition: ssd1306_menu.c:133
uint8_t ssd1306_displayHeight(void)
void ssd1306_clearScreen()
Definition: ssd1306_1bit.c:61
uint8_t ssd1331_printFixed8(lcdint_t x, lcdint_t y, const char *ch, EFontStyle style)
Definition: ssd1306_8bit.c:360
void ssd1306_negativeMode()
Definition: ssd1306_1bit.c:846
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