lvgl: lvgl-demo: rework recipe to include wayland backend support
Rework our customizations and apply them as full files instead of patches to make it easier for users to inspect. Instead of having one cmake file for all backends, provide a separate file for each backend and select it dynamically based on the selected backend. To do this, create a new LVGL_BACKEND variable in lv-conf.inc. While at it, increase the demo's memory from 256 KiB to 2 MiB to ensure that the wayland flavor of the demo works properly. https://onedigi.atlassian.net/browse/DEL-9925 Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>
This commit is contained in:
Gabriel Valcazar
parent
e3df152ccd
commit
de238b6d81
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@ -1,29 +0,0 @@
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From 1ffdfa2d0d36c566006b5b1f24d2a9e68888a5c1 Mon Sep 17 00:00:00 2001
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From: Mike Engel <Mike.Engel@digi.com>
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Date: Tue, 2 Sep 2025 10:21:07 +0200
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Subject: [PATCH] lvgl-demo: remove demo slideshow
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This commit removes the demo slideshow function to
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avoid the application changes automatically between
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the different taps.
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Signed-off-by: Mike Engel <Mike.Engel@digi.com>
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---
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main.c | 1 -
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1 file changed, 1 deletion(-)
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diff --git a/main.c b/main.c
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index e02cef9..7ec513c 100644
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--- a/main.c
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+++ b/main.c
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@@ -48,7 +48,6 @@ int main(void)
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/*Create a Demo*/
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lv_demo_widgets();
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- lv_demo_widgets_start_slideshow();
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/*Handle LVGL tasks*/
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while(1) {
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--
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2.51.0
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@ -1,27 +0,0 @@
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From 49f99a403e36bb3bb54943d7a351d4aadffe3447 Mon Sep 17 00:00:00 2001
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From: Mike Engel <Mike.Engel@digi.com>
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Date: Wed, 6 Aug 2025 16:59:28 +0200
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Subject: [PATCH] CMakefile: remove libdrm dependency when building fbdev demo
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Signed-off-by: Mike Engel <Mike.Engel@digi.com>
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---
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CMakeLists.txt | 3 ---
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1 file changed, 3 deletions(-)
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diff --git a/CMakeLists.txt b/CMakeLists.txt
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index 658193f..c6a2b85 100644
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--- a/CMakeLists.txt
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+++ b/CMakeLists.txt
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@@ -12,9 +12,6 @@ target_include_directories(lvgl PUBLIC ${PROJECT_SOURCE_DIR})
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add_executable(main main.c mouse_cursor_icon.c)
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-include(${CMAKE_CURRENT_LIST_DIR}/lvgl/tests/FindLibDRM.cmake)
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-include_directories(${Libdrm_INCLUDE_DIRS})
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-
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find_package(SDL2)
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find_package(SDL2_image)
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include_directories(${SDL2_INCLUDE_DIRS} ${SDL2_IMAGE_INCLUDE_DIRS})
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--
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2.34.1
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@ -1,76 +0,0 @@
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From d7696f869a014d6fa15e25cf7818e43f3c110acb Mon Sep 17 00:00:00 2001
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From: Mike Engel <Mike.Engel@digi.com>
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Date: Tue, 2 Sep 2025 11:49:32 +0200
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Subject: [PATCH] lvgl-demo: add input device discovery support to LVGL-demo
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This commit adds input device discovery support to the demo.
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When input device is a mouse it will create the cursor.
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Signed-off-by: Mike Engel <Mike.Engel@digi.com>
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---
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main.c | 29 +++++++++++++++++++++++++++++
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1 file changed, 29 insertions(+)
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diff --git a/main.c b/main.c
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index ba03f23..f821936 100644
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--- a/main.c
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+++ b/main.c
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@@ -1,5 +1,6 @@
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#include "lvgl/lvgl.h"
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#include "lvgl/demos/lv_demos.h"
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+#include "lvgl/src/core/lv_global.h"
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#include <unistd.h>
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#include <pthread.h>
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#include <time.h>
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@@ -11,6 +12,30 @@ static const char *getenv_default(const char *name, const char *dflt)
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return getenv(name) ? : dflt;
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}
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+static void indev_deleted_cb(lv_event_t * e)
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+{
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+ if(LV_GLOBAL_DEFAULT()->deinit_in_progress)
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+ return;
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+ lv_obj_t * cursor_obj = lv_event_get_user_data(e);
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+ lv_obj_delete(cursor_obj);
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+}
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+
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+static void discovery_cb(lv_indev_t * indev, lv_evdev_type_t type, void * user_data)
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+{
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+ LV_LOG_USER("new '%s' device discovered", type == LV_EVDEV_TYPE_REL ? "REL" :
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+ type == LV_EVDEV_TYPE_ABS ? "ABS" :
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+ type == LV_EVDEV_TYPE_KEY ? "KEY" :
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+ "unknown");
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+ /* if input device is mouse add cursor */
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+ if(type == LV_EVDEV_TYPE_REL) {
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+ LV_IMAGE_DECLARE(mouse_cursor_icon);
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+ lv_obj_t * cursor_obj = lv_image_create(lv_screen_active());
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+ lv_image_set_src(cursor_obj, &mouse_cursor_icon);
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+ lv_indev_set_cursor(indev, cursor_obj);
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+ lv_indev_add_event_cb(indev, indev_deleted_cb, LV_EVENT_DELETE, cursor_obj);
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+ }
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+}
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+
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#if LV_USE_LINUX_FBDEV
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static void lv_linux_disp_init(void)
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{
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@@ -18,6 +43,8 @@ static void lv_linux_disp_init(void)
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lv_display_t * disp = lv_linux_fbdev_create();
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lv_linux_fbdev_set_file(disp, device);
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+ /* search for input devices */
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+ lv_evdev_discovery_start(discovery_cb, NULL);
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}
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#elif LV_USE_LINUX_DRM
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static void lv_linux_disp_init(void)
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@@ -26,6 +53,8 @@ static void lv_linux_disp_init(void)
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lv_display_t * disp = lv_linux_drm_create();
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lv_linux_drm_set_file(disp, device, -1);
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+ /* search for input devices */
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+ lv_evdev_discovery_start(discovery_cb, NULL);
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}
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#elif LV_USE_SDL
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static void lv_linux_disp_init(void)
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--
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2.51.0
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@ -0,0 +1,20 @@
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cmake_minimum_required(VERSION 3.10)
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project(lvgl)
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set(CMAKE_C_STANDARD 99)#C99 # lvgl officially support C99 and above
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set(CMAKE_CXX_STANDARD 17)#C17
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
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add_subdirectory(lvgl)
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target_include_directories(lvgl PUBLIC ${PROJECT_SOURCE_DIR})
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add_executable(main main.c mouse_cursor_icon.c)
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include(${CMAKE_CURRENT_LIST_DIR}/lvgl/tests/FindLibDRM.cmake)
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include_directories(${Libdrm_INCLUDE_DIRS})
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target_link_libraries(main lvgl lvgl::examples lvgl::demos ${Libdrm_LIBRARIES} m pthread)
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add_custom_target (run COMMAND ${EXECUTABLE_OUTPUT_PATH}/main DEPENDS main)
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@ -0,0 +1,17 @@
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cmake_minimum_required(VERSION 3.10)
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project(lvgl)
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set(CMAKE_C_STANDARD 99)#C99 # lvgl officially support C99 and above
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set(CMAKE_CXX_STANDARD 17)#C17
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
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add_subdirectory(lvgl)
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target_include_directories(lvgl PUBLIC ${PROJECT_SOURCE_DIR})
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add_executable(main main.c mouse_cursor_icon.c)
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target_link_libraries(main lvgl lvgl::examples lvgl::demos m pthread)
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add_custom_target (run COMMAND ${EXECUTABLE_OUTPUT_PATH}/main DEPENDS main)
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@ -0,0 +1,51 @@
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cmake_minimum_required(VERSION 3.10)
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project(lvgl)
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set(CMAKE_C_STANDARD 99)#C99 # lvgl officially support C99 and above
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set(CMAKE_CXX_STANDARD 17)#C17
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
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find_package(PkgConfig)
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pkg_check_modules(PKG_WAYLAND wayland-client wayland-cursor xkbcommon)
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# Wayland protocols
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find_program(WAYLAND_SCANNER_EXECUTABLE NAMES wayland-scanner)
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pkg_check_modules(WAYLAND_PROTOCOLS REQUIRED wayland-protocols>=1.25)
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pkg_get_variable(WAYLAND_PROTOCOLS_BASE wayland-protocols pkgdatadir)
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macro(wayland_generate protocol_xml_file output_dir output_name target)
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set(output_file_noext "${output_dir}/${output_name}")
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add_custom_command(OUTPUT "${output_file_noext}.h"
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COMMAND "${WAYLAND_SCANNER_EXECUTABLE}" client-header "${protocol_xml_file}" "${output_file_noext}.h"
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DEPENDS "${protocol_xml_file}"
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VERBATIM)
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add_custom_command(OUTPUT "${output_file_noext}.c"
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COMMAND "${WAYLAND_SCANNER_EXECUTABLE}" private-code "${protocol_xml_file}" "${output_file_noext}.c"
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DEPENDS "${protocol_xml_file}"
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VERBATIM)
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if(NOT EXISTS ${protocol_xml_file})
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message("Protocol XML file not found: " ${protocol_xml_file})
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else()
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set_property(TARGET ${target} APPEND PROPERTY SOURCES "${output_file_noext}.h" "${output_file_noext}.c")
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endif()
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endmacro()
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set(WAYLAND_PROTOCOLS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/wl_protocols")
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file(MAKE_DIRECTORY ${WAYLAND_PROTOCOLS_DIR})
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add_custom_target(generate_xdg_shell_protocol ALL)
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wayland_generate("${WAYLAND_PROTOCOLS_BASE}/stable/xdg-shell/xdg-shell.xml" "${WAYLAND_PROTOCOLS_DIR}" "wayland_xdg_shell" generate_xdg_shell_protocol)
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add_subdirectory(lvgl)
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target_include_directories(lvgl PRIVATE ${WAYLAND_PROTOCOLS_DIR})
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target_include_directories(lvgl PUBLIC ${PROJECT_SOURCE_DIR})
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add_executable(main main.c mouse_cursor_icon.c ${WAYLAND_PROTOCOLS_DIR}/wayland_xdg_shell.c)
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target_link_libraries(main lvgl lvgl::examples lvgl::demos ${PKG_WAYLAND_LIBRARIES} m pthread)
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add_custom_target (run COMMAND ${EXECUTABLE_OUTPUT_PATH}/main DEPENDS main)
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@ -0,0 +1,109 @@
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#include "lvgl/lvgl.h"
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#include "lvgl/demos/lv_demos.h"
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#include "lvgl/src/core/lv_global.h"
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#include <unistd.h>
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#include <pthread.h>
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#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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static const char *getenv_default(const char *name, const char *dflt)
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{
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return getenv(name) ? : dflt;
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}
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#if LV_USE_LINUX_FBDEV || LV_USE_LINUX_DRM
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static void indev_deleted_cb(lv_event_t * e)
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{
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if(LV_GLOBAL_DEFAULT()->deinit_in_progress)
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return;
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lv_obj_t * cursor_obj = lv_event_get_user_data(e);
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lv_obj_delete(cursor_obj);
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}
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static void discovery_cb(lv_indev_t * indev, lv_evdev_type_t type, void * user_data)
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{
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LV_LOG_USER("new '%s' device discovered", type == LV_EVDEV_TYPE_REL ? "REL" :
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type == LV_EVDEV_TYPE_ABS ? "ABS" :
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type == LV_EVDEV_TYPE_KEY ? "KEY" :
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"unknown");
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/* if input device is mouse add cursor */
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if(type == LV_EVDEV_TYPE_REL) {
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LV_IMAGE_DECLARE(mouse_cursor_icon);
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lv_obj_t * cursor_obj = lv_image_create(lv_screen_active());
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lv_image_set_src(cursor_obj, &mouse_cursor_icon);
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lv_indev_set_cursor(indev, cursor_obj);
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lv_indev_add_event_cb(indev, indev_deleted_cb, LV_EVENT_DELETE, cursor_obj);
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}
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}
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#endif
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#if LV_USE_LINUX_FBDEV
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static void lv_linux_disp_init(void)
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{
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const char *device = getenv_default("LV_LINUX_FBDEV_DEVICE", "/dev/fb0");
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lv_display_t * disp = lv_linux_fbdev_create();
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lv_linux_fbdev_set_file(disp, device);
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/* search for input devices */
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lv_evdev_discovery_start(discovery_cb, NULL);
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}
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#elif LV_USE_LINUX_DRM
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static void lv_linux_disp_init(void)
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{
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const char *device = getenv_default("LV_LINUX_DRM_CARD", "/dev/dri/card0");
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lv_display_t * disp = lv_linux_drm_create();
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lv_linux_drm_set_file(disp, device, -1);
|
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/* search for input devices */
|
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lv_evdev_discovery_start(discovery_cb, NULL);
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}
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#elif LV_USE_WAYLAND
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static void lv_linux_disp_init(void)
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{
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/*
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* Initial resolution doesn't really matter if we're changing to fullscreen
|
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* immediately after. It should be fine as long as it's big enough to
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* display all widgets correctly.
|
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*/
|
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lv_display_t * disp = lv_wayland_window_create(1280, 800, "LVGL Demo", NULL);
|
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lv_wayland_window_set_fullscreen(disp, true);
|
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if(LV_COLOR_DEPTH == 32) {
|
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lv_display_set_color_format(disp, LV_COLOR_FORMAT_ARGB8888);
|
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}
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}
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#else
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#error Unsupported configuration
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#endif
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int main(void)
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{
|
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lv_init();
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/*Linux display device init*/
|
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lv_linux_disp_init();
|
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/*Create a Demo*/
|
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lv_demo_widgets();
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#if LV_USE_WAYLAND
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while (1) {
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lv_wayland_timer_handler();
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usleep(5000);
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/* Run until the last window closes */
|
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if (!lv_wayland_window_is_open(NULL)) {
|
||||||
|
break;
|
||||||
|
}
|
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}
|
||||||
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#else
|
||||||
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/*Handle LVGL tasks*/
|
||||||
|
while(1) {
|
||||||
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lv_timer_handler();
|
||||||
|
usleep(5000);
|
||||||
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}
|
||||||
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#endif
|
||||||
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return 0;
|
||||||
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}
|
||||||
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@ -3,7 +3,9 @@
|
||||||
MINIMAL_LVGL_BACKEND ?= "drm"
|
MINIMAL_LVGL_BACKEND ?= "drm"
|
||||||
MINIMAL_LVGL_BACKEND:ccimx6 = "fbdev"
|
MINIMAL_LVGL_BACKEND:ccimx6 = "fbdev"
|
||||||
MINIMAL_LVGL_BACKEND:ccimx6ul = "fbdev"
|
MINIMAL_LVGL_BACKEND:ccimx6ul = "fbdev"
|
||||||
PACKAGECONFIG = "${@bb.utils.contains('DISTRO_FEATURES', 'wayland', 'wayland', '${MINIMAL_LVGL_BACKEND}', d)}"
|
LVGL_BACKEND ?= "${@bb.utils.contains('DISTRO_FEATURES', 'wayland', 'wayland', '${MINIMAL_LVGL_BACKEND}', d)}"
|
||||||
|
|
||||||
|
PACKAGECONFIG ?= "${LVGL_BACKEND}"
|
||||||
|
|
||||||
PACKAGECONFIG[drm] = ",,libdrm"
|
PACKAGECONFIG[drm] = ",,libdrm"
|
||||||
PACKAGECONFIG[fbdev] = ",,"
|
PACKAGECONFIG[fbdev] = ",,"
|
||||||
|
|
|
||||||
|
|
@ -7,18 +7,21 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=802d3d83ae80ef5f343050bf96cce3a4 \
|
||||||
SRC_URI = "\
|
SRC_URI = "\
|
||||||
git://github.com/lvgl/lv_port_linux_frame_buffer.git;protocol=https;branch=release/v9.3;name=demo \
|
git://github.com/lvgl/lv_port_linux_frame_buffer.git;protocol=https;branch=release/v9.3;name=demo \
|
||||||
git://github.com/lvgl/lvgl;protocol=https;branch=release/v9.3;name=lvgl;subdir=git/lvgl \
|
git://github.com/lvgl/lvgl;protocol=https;branch=release/v9.3;name=lvgl;subdir=git/lvgl \
|
||||||
file://0001-lvgl-demo-remove-demo-slideshow.patch \
|
file://digi_main.c \
|
||||||
file://0004-lvgl-demo-add-input-device-discovery-support-to-LVGL.patch \
|
file://CMakeLists.txt_fbdev \
|
||||||
|
file://CMakeLists.txt_drm \
|
||||||
|
file://CMakeLists.txt_wayland \
|
||||||
file://lvgl-demo-init \
|
file://lvgl-demo-init \
|
||||||
file://lvgl-demo-init.service \
|
file://lvgl-demo-init.service \
|
||||||
"
|
"
|
||||||
|
|
||||||
SRC_URI:append:ccimx6ul = "\
|
SRC_URI:remove:ccimx6 = "\
|
||||||
file://0003-CMakefile-remove-libdrm-dependency-when-building-fbd.patch \
|
file://CMakeLists.txt_drm \
|
||||||
"
|
"
|
||||||
|
|
||||||
SRC_URI:append:ccimx6 = "\
|
SRC_URI:remove:ccimx6ul = "\
|
||||||
file://0003-CMakefile-remove-libdrm-dependency-when-building-fbd.patch \
|
file://CMakeLists.txt_drm \
|
||||||
|
file://CMakeLists.txt_wayland \
|
||||||
"
|
"
|
||||||
|
|
||||||
SRCREV_demo = "d07de027a8eb220f4e20f0e1b8be28729332e9ea"
|
SRCREV_demo = "d07de027a8eb220f4e20f0e1b8be28729332e9ea"
|
||||||
|
|
@ -35,18 +38,27 @@ LVGL_CONFIG_FBDEV_DEVICE ?= "/dev/fb0"
|
||||||
LVGL_CONFIG_FBDEV_DEVICE:ccimx6 = "/dev/fb3"
|
LVGL_CONFIG_FBDEV_DEVICE:ccimx6 = "/dev/fb3"
|
||||||
LVGL_CONFIG_LV_USE_LOG = "1"
|
LVGL_CONFIG_LV_USE_LOG = "1"
|
||||||
LVGL_CONFIG_LV_LOG_PRINTF = "1"
|
LVGL_CONFIG_LV_LOG_PRINTF = "1"
|
||||||
LVGL_CONFIG_LV_MEM_SIZE = "(256 * 1024U)"
|
LVGL_CONFIG_LV_MEM_SIZE = "(2 * 1024U * 1024U)"
|
||||||
LVGL_CONFIG_LV_USE_FONT_COMPRESSED = "1"
|
LVGL_CONFIG_LV_USE_FONT_COMPRESSED = "1"
|
||||||
|
|
||||||
require lv-conf.inc
|
require lv-conf.inc
|
||||||
|
|
||||||
inherit cmake systemd update-rc.d
|
inherit cmake systemd update-rc.d pkgconfig
|
||||||
|
|
||||||
S = "${WORKDIR}/git"
|
S = "${WORKDIR}/git"
|
||||||
|
|
||||||
LVGL_DEMO_ENV ?= "DISPLAY=:0.0 XDG_RUNTIME_DIR=/run/user/0 WAYLAND_DISPLAY=\$\{DEMO_DISPLAY\}"
|
LVGL_DEMO_ENV ?= "DISPLAY=:0.0 XDG_RUNTIME_DIR=/run/user/0 WAYLAND_DISPLAY=\$\{DEMO_DISPLAY\}"
|
||||||
LVGL_DEMO_ENV:ccimx6ul ?= ""
|
LVGL_DEMO_ENV:ccimx6ul ?= ""
|
||||||
|
|
||||||
|
do_configure:prepend() {
|
||||||
|
cp ${WORKDIR}/digi_main.c ${S}/main.c
|
||||||
|
if [ -f "${WORKDIR}/CMakeLists.txt_${LVGL_BACKEND}" ] ; then
|
||||||
|
cp ${WORKDIR}/CMakeLists.txt_${LVGL_BACKEND} ${S}/CMakeLists.txt
|
||||||
|
else
|
||||||
|
bbfatal "Unsupported LVGL demo backend '${LVGL_BACKEND}'"
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
do_install:append() {
|
do_install:append() {
|
||||||
install -d ${D}${bindir}
|
install -d ${D}${bindir}
|
||||||
install -m 0755 ${S}/bin/main ${D}${bindir}/lvgl-demo
|
install -m 0755 ${S}/bin/main ${D}${bindir}/lvgl-demo
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue