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98 lines
2.9 KiB
Markdown
98 lines
2.9 KiB
Markdown
2 years ago
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# Add GTK under Linux in Eclipse
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## Install GDK
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```
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sudo apt-get install libgtk-3-dev
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sudo apt-get install libglib2.0-dev
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```
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## Add GTK include paths and libraries
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In "Project properties > C/C++ Build > Settings" set the followings:
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- "Cross GCC Compiler > Command line pattern"
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- Add ` ${gtk+-cflags}` to the end (add a space between the last command and this)
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- "Cross GCC Compiler > Includes"
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- /usr/include/glib-2.0
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- /usr/include/gtk-3.0
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- /usr/include/pango-1.0
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- /usr/include/cairo
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- /usr/include/gdk-pixbuf-2.0
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- /usr/include/atk-1.0
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- "Cross GCC Linker > Command line pattern"
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- Add ` ${gtk+-libs}` to the end (add a space between the last command and this)
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- "Cross GCC Linker > Libraries"
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- Add `pthread`
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- In "C/C++ Build > Build variables"
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- Configuration: [All Configuration]
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- Add
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- Variable name: `gtk+-cflags`
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- Type: `String`
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- Value: `pkg-config --cflags gtk+-3.0`
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- Variable name: `gtk+-libs`
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- Type: `String`
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- Value: `pkg-config --libs gtk+-3.0`
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## Init GDK in LVGL
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1. In `main.c` `#include "lv_drivers/gtkdrv/gtkdrv.h"`
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2. Enable the GTK driver in `lv_drv_conf.h` with `USE_GTK 1`
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3. After `lv_init()` call `gdkdrv_init()`;
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4. Add a display:
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```c
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static lv_disp_buf_t disp_buf1;
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static lv_color_t buf1_1[LV_HOR_RES_MAX * LV_VER_RES_MAX];
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lv_disp_buf_init(&disp_buf1, buf1_1, NULL, LV_HOR_RES_MAX * LV_VER_RES_MAX);
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/*Create a display*/
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lv_disp_drv_t disp_drv;
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lv_disp_drv_init(&disp_drv);
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disp_drv.buffer = &disp_buf1;
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disp_drv.flush_cb = gtkdrv_flush_cb;
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```
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5. Add mouse:
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```c
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lv_indev_drv_t indev_drv_mouse;
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lv_indev_drv_init(&indev_drv_mouse);
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indev_drv_mouse.type = LV_INDEV_TYPE_POINTER;
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```
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6. Add keyboard:
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```c
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lv_indev_drv_t indev_drv_kb;
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lv_indev_drv_init(&indev_drv_kb);
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indev_drv_kb.type = LV_INDEV_TYPE_KEYPAD;
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indev_drv_kb.read_cb = lv_keyboard_read_cb;
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lv_indev_drv_register(&indev_drv_kb);
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```
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7. Configure tick in `lv_conf.h`
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```c
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#define LV_TICK_CUSTOM 1
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#if LV_TICK_CUSTOM == 1
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#define LV_TICK_CUSTOM_INCLUDE "lv_drivers/gtkdrv/gtkdrv.h" /*Header for the sys time function*/
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#define LV_TICK_CUSTOM_SYS_TIME_EXPR (gtkdrv_tick_get()) /*Expression evaluating to current systime in ms*/
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#endif /*LV_TICK_CUSTOM*/
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```
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8. Be sure `LV_COLOR_DEPTH` is `32` in `lv_conf.h`
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## Run in a window
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Build and Run to "normally" run the UI in a window
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## Run in browser
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With the help of `Broadway` the UI can be easily shown via a browser.
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1. Open Terminal and start *Broadway* with `broadwayd :5`. Leave the terminal running.
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2. Navigate to where eclipse created the binary executable (my_project/Debug) and open a terminal in that folder.
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In this terminal run `GDK_BACKEND=broadway BROADWAY_DISPLAY=:5 ./my_executable` (replace *my_executable* wih name of your executable)
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3. Open a web browser and go to `http://localhost:8085/`
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