CMakeLists.txt

@@ -29,9 +29,11 @@ include("${DEVKITPRO}/cmake/3DS.cmake")
 # LVGL
 # -----------------------------------------------------------------------------
 
-set(LV_CONF_INCLUDE_SIMPLE ON)
-set(LV_BUILD_CONF_DIR include)
-
+cmake_policy(SET CMP0077 NEW)
+#set(LV_CONF_INCLUDE_SIMPLE ON)
+#set(LV_BUILD_CONF_PATH ./include/lv_conf.h)
+set(CONFIG_LV_BUILD_EXAMPLES OFF)
+set(CONFIG_LV_BUILD_DEMOS OFF)
 add_subdirectory(libraries/lvgl)
 
 # -----------------------------------------------------------------------------
@@ -40,6 +42,7 @@ add_subdirectory(libraries/lvgl)
 add_executable(${PROJECT_NAME}
     source/main.c
     source/lv_ctr_disp.c
+    source/lv_ctr_indev.c
 )
 
 target_include_directories(${PROJECT_NAME} PRIVATE

include/lv_ctr_disp.h

@@ -25,6 +25,13 @@ extern "C" {
  *      DEFINES
  *********************/
 
+// TODO: make it configurable for RGB888/RGB565
+// (currently hardcoded to ARGB888, otherwise I was getting only white screen)
+#define CTR_LV_COLOR_FORMAT LV_COLOR_FORMAT_ARGB8888
+#define CTR_TEX_COLOR_FORMAT GPU_RGBA8
+#define CTR_TR_IN_COLOR_FORMAT GX_TRANSFER_FMT_RGBA8
+#define CTR_TR_OUT_COLOR_FORMAT GX_TRANSFER_FMT_RGBA8
+
 /**********************
  *      TYPEDEFS
  **********************/

include/lv_ctr_indev.h

@@ -0,0 +1,48 @@
+
+/**
+ * @file lv_ctr_indev.h
+ *
+ */
+
+#if 1
+
+#ifndef LV_CTR_INDEV_H
+#define LV_CTR_INDEV_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#if defined(LV_LVGL_H_INCLUDE_SIMPLE)
+#include "lvgl.h"
+#else
+#include "lvgl/lvgl.h"
+#endif
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_ctr_indev_init(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_CTR_INDEV_H*/
+
+#endif /*Disable/Enable content*/

lv_conf.h

@@ -1,11 +1,14 @@
 #ifndef LV_CONF_H
 #define LV_CONF_H
 
-#define LV_COLOR_DEPTH 16
+#define LV_COLOR_DEPTH 32
+#define LV_USE_OS 0
 
 #define LV_MEM_SIZE (256U * 1024U)
 
-#define LV_USE_LOG 0
+#define LV_USE_LOG 1
+//#define LV_LOG_LEVEL LV_LOG_LEVEL_TRACE
+#define LV_LOG_PRINTF 1
 
 #define LV_USE_ASSERT_NULL 1
 

source/lv_ctr_disp.c

@@ -22,7 +22,9 @@
 #define BOTTOM_TEX_HOR_RES     512
 #define BOTTOM_TEX_VER_RES     256
 
-#define BYTE_PER_PIXEL (LV_COLOR_FORMAT_GET_SIZE(LV_COLOR_FORMAT_ARGB8888))
+#define BYTE_PER_PIXEL (LV_COLOR_FORMAT_GET_SIZE(CTR_LV_COLOR_FORMAT))
+#define BOTTOM_DISP_STRIDE (BOTTOM_TEX_HOR_RES * BYTE_PER_PIXEL)
+#define BOTTOM_DISP_BUF_SIZE BOTTOM_DISP_STRIDE * BOTTOM_DISP_VER_RES
 
 /**********************
  *      TYPEDEFS
@@ -48,6 +50,8 @@ __attribute__ ((const)) static inline u32 tex_pot(u32 x) {
 C3D_RenderTarget *bottom_screen;
 C3D_Tex tex;
 Tex3DS_SubTexture subt3x;
+LV_ATTRIBUTE_MEM_ALIGN static uint8_t * buf_1 = NULL;
+LV_ATTRIBUTE_MEM_ALIGN static uint8_t * buf_2 = NULL;
 
 /**********************
  *      MACROS
@@ -68,13 +72,14 @@ void lv_ctr_disp_init(void)
      * Create a display and set a flush_cb
      * -----------------------------------*/
     lv_display_t * bottom_disp = lv_display_create(BOTTOM_DISP_HOR_RES, BOTTOM_DISP_VER_RES);
+    lv_display_set_color_format(bottom_disp, CTR_LV_COLOR_FORMAT);
     lv_display_set_flush_cb(bottom_disp, disp_flush);
+    lv_display_set_default(bottom_disp);
 
     /* Two buffers for double buffering. */
-#define BOTTOM_TEX_STRIDE (BOTTOM_TEX_HOR_RES * BYTE_PER_PIXEL)
-    LV_ATTRIBUTE_MEM_ALIGN static uint8_t buf_1[BOTTOM_TEX_STRIDE * BOTTOM_DISP_VER_RES];
-    LV_ATTRIBUTE_MEM_ALIGN static uint8_t buf_2[BOTTOM_TEX_STRIDE * BOTTOM_DISP_VER_RES];
-    lv_display_set_buffers_with_stride(bottom_disp, buf_1, buf_2, sizeof(buf_1), BOTTOM_TEX_STRIDE, LV_DISPLAY_RENDER_MODE_FULL);
+    buf_1 = linearAlloc(BOTTOM_DISP_BUF_SIZE);
+    buf_2 = linearAlloc(BOTTOM_DISP_BUF_SIZE);
+    lv_display_set_buffers_with_stride(bottom_disp, buf_1, buf_2, BOTTOM_DISP_BUF_SIZE, BOTTOM_DISP_STRIDE, LV_DISPLAY_RENDER_MODE_FULL);
 
 }
 
@@ -85,17 +90,14 @@ void lv_ctr_disp_init(void)
 /*Initialize your display and the required peripherals.*/
 static void disp_init(void)
 {
-    gfxInitDefault();
-
-    ptmuInit();
-
     C3D_Init(C3D_DEFAULT_CMDBUF_SIZE);
     C2D_Init(C2D_DEFAULT_MAX_OBJECTS);
     C2D_Prepare();
     bottom_screen = C2D_CreateScreenTarget(GFX_BOTTOM, GFX_LEFT);
 
-    if(0 == C3D_TexInit(&tex, BOTTOM_TEX_HOR_RES, BOTTOM_TEX_VER_RES, GPU_RGB8)) puts("Could not create main texture.");
-    memset(tex.data, 0, tex.size);
+    if(0 == C3D_TexInit(&tex, BOTTOM_TEX_HOR_RES, BOTTOM_TEX_VER_RES, CTR_TEX_COLOR_FORMAT)) puts("Could not create main texture.");
+    memset(tex.data, 0xFF, tex.size);
+    C3D_TexFlush(&tex);
     tex.border = 0xFFFFFFFF;
     C3D_TexSetWrap(&tex, GPU_CLAMP_TO_BORDER, GPU_CLAMP_TO_BORDER);
 
@@ -137,18 +139,22 @@ static void disp_flush(lv_display_t * disp_drv, const lv_area_t * area, uint8_t
         u32 dim = GX_BUFFER_DIM(tex.width, tex.height);
             C3D_SyncDisplayTransfer((u32 *)px_map, dim, (u32*)tex.data, dim,
             (GX_TRANSFER_FLIP_VERT(0) | GX_TRANSFER_OUT_TILED(1) | GX_TRANSFER_RAW_COPY(0) |
-		GX_TRANSFER_IN_FORMAT(GX_TRANSFER_FMT_RGBA8) | GX_TRANSFER_OUT_FORMAT(GX_TRANSFER_FMT_RGB8) |
+            GX_TRANSFER_IN_FORMAT(CTR_TR_IN_COLOR_FORMAT) | GX_TRANSFER_OUT_FORMAT(CTR_TR_OUT_COLOR_FORMAT) |
             GX_TRANSFER_SCALING(GX_TRANSFER_SCALE_NO))
         );
 
         // start frame, clear targets
         C3D_FrameBegin(C3D_FRAME_SYNCDRAW);
         C2D_TargetClear(bottom_screen, C2D_Color32f(0, 0, 0, 1));
+        C2D_ImageTint tint;
+        C2D_PlainImageTint(&tint, C2D_Color32(255,255,255,255), 1.0f);
+
+        gspWaitForVBlank();
     
         C2D_SceneBegin(bottom_screen);
 
         C2D_Image img = { &tex, &subt3x };
-	C2D_DrawImageAt(img, 0, 0, 0.6f, NULL, 1.0f, 1.0f);
+        C2D_DrawImageAt(img, 0, 0, 0.6f, &tint, 1.f, 1.f);
 
         C3D_FrameEnd(0);
     }

source/lv_ctr_indev.c

@@ -0,0 +1,90 @@
+/**
+ * @file lv_ctr_indev.c
+ *
+ */
+
+#if 1
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_ctr_indev.h"
+#include <3ds.h>
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+
+static void touchpad_read(lv_indev_t * indev, lv_indev_data_t * data);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+lv_indev_t * indev_touchpad;
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_ctr_indev_init(void)
+{
+    /*Register a touch screen input device*/
+    indev_touchpad = lv_indev_create();
+    lv_indev_set_type(indev_touchpad, LV_INDEV_TYPE_POINTER);
+    lv_indev_set_read_cb(indev_touchpad, touchpad_read);
+
+    /*Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
+     *add objects to the group with `lv_group_add_obj(group, obj)`
+     *and assign this input device to group to navigate in it:
+     *`lv_indev_set_group(indev_keypad, group);`*/
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+/*------------------
+ * Touchpad
+ * -----------------*/
+
+static void touchpad_read(lv_indev_t * indev_drv, lv_indev_data_t * data)
+{
+    static int32_t last_x = 0;
+    static int32_t last_y = 0;
+    touchPosition touch;
+    
+    hidScanInput();
+
+    /*Save the pressed coordinates and the state*/
+    if(hidKeysHeld() & KEY_TOUCH) {
+        hidTouchRead(&touch);
+        last_x = touch.px;
+        last_y = touch.py;
+        data->state = LV_INDEV_STATE_PRESSED;
+    }
+    else {
+        data->state = LV_INDEV_STATE_RELEASED;
+    }
+
+    /*Set the last pressed coordinates*/
+    data->point.x = last_x;
+    data->point.y = last_y;
+}
+
+#else /*Enable this file at the top*/
+
+/*This dummy typedef exists purely to silence -Wpedantic.*/
+typedef int keep_pedantic_happy;
+#endif

source/main.c

@@ -4,37 +4,171 @@
 #include <3ds.h>
 #include "lvgl.h"
 #include "lv_ctr_disp.h"
+#include "lv_ctr_indev.h"
+
+
+static lv_obj_t * cursor;
+static lv_obj_t * label;
+static lv_obj_t * label2;
+static lv_obj_t * fps_label;
+
 
-// ote: expected 'lv_tick_get_cb_t' {aka 'long unsigned int (*)(void)'} but argument is of type 'u64 (*)(void)' {aka 'long long unsigned int (*)(void)'}
 long unsigned int sys_tick(void)
 {
-    return (long unsigned int)svcGetSystemTick();
+    long unsigned int tick = (long unsigned int)osGetTime();
+    return tick;
+}
+
+void sys_init(void)
+{
+    gfxInitDefault();
+    consoleInit(GFX_TOP, NULL);
+}
+
+void sys_free(void)
+{
+    gfxExit();
+}
+
+static void cursor_timer_cb(lv_timer_t * t)
+{
+    LV_UNUSED(t);
+
+    lv_indev_t * indev = lv_indev_get_next(NULL);
+
+    if (!indev)
+        return;
+
+    lv_point_t p;
+    lv_indev_get_point(indev, &p);
+
+    if (lv_indev_get_state(indev) == LV_INDEV_STATE_PRESSED) {
+
+        lv_obj_set_pos(cursor, p.x - 5, p.y - 5);
+        lv_obj_clear_flag(cursor, LV_OBJ_FLAG_HIDDEN);
+
+        lv_label_set_text_fmt(label2,
+            "x: %d\ny: %d",
+            p.x,
+            p.y);
+    }
+    else {
+        lv_obj_add_flag(cursor, LV_OBJ_FLAG_HIDDEN);
+    }
+}
+
+static void switch_event_cb(lv_event_t * e)
+{
+    lv_obj_t * sw = lv_event_get_target(e);
+
+    if (lv_obj_has_state(sw, LV_STATE_CHECKED))
+        lv_label_set_text_fmt(label, "ON");
+    else
+        lv_label_set_text_fmt(label, "OFF");
+}
+
+static void fps_tick(void)
+{
+    static u32 frames = 0;
+    static u64 last = 0;
+
+    u64 now = osGetTime();
+
+    frames++;
+
+    if (now - last >= 1000) {
+
+        lv_label_set_text_fmt(fps_label,
+            "FPS: %lu",
+            frames);
+
+        frames = 0;
+        last = now;
+    }
+}
+
+static void ui_prepare(void)
+{
+    /* Container START */
+    lv_obj_t * cont = lv_obj_create(lv_screen_active());
+
+    /* Container layout */
+    lv_obj_set_size(cont, 220, 120);
+    lv_obj_center(cont);
+
+    lv_obj_set_layout(cont, LV_LAYOUT_FLEX);
+    lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_flex_align(cont,
+        LV_FLEX_ALIGN_CENTER,
+        LV_FLEX_ALIGN_CENTER,
+        LV_FLEX_ALIGN_CENTER);
+
+    /* Optional cleaner look */
+    lv_obj_set_style_pad_all(cont, 16, 0);
+    lv_obj_set_style_pad_row(cont, 12, 0);
+
+    /* Label */
+    label = lv_label_create(cont);
+    lv_label_set_text(label, "Hello world");
+
+    /* Switch */
+    lv_obj_t * sw = lv_switch_create(cont);
+    lv_obj_center(sw);
+    lv_obj_add_event_cb(sw,
+        switch_event_cb,
+        LV_EVENT_VALUE_CHANGED,
+        NULL);
+    /* Container END */
+    
+    /* Cursor */
+    cursor = lv_obj_create(lv_screen_active());
+    lv_obj_set_size(cursor, 10, 10);
+    lv_obj_set_style_radius(cursor, LV_RADIUS_CIRCLE, 0);
+    lv_obj_set_style_bg_color(cursor, lv_palette_main(LV_PALETTE_RED), 0);
+    lv_obj_set_style_border_width(cursor, 0, 0);
+
+    /* Coord label */
+    label2 = lv_label_create(lv_screen_active());
+    lv_obj_align(label2, LV_ALIGN_TOP_LEFT, 4, 4);
+    
+    /* FPS label */
+    fps_label = lv_label_create(lv_screen_active());
+    lv_obj_align(fps_label,
+        LV_ALIGN_BOTTOM_LEFT,
+        4,
+        -4);
+    
+    /* Main loop UI update timer */
+    lv_timer_create(cursor_timer_cb, 16, NULL);
+    
+    lv_obj_invalidate(lv_screen_active());
 }
 
 int main(int argc, char* argv[])
 {
-    lv_ctr_disp_init();
+    sys_init();
     lv_init();
+    lv_ctr_disp_init();
+    lv_ctr_indev_init();
     lv_tick_set_cb(sys_tick);
 
-    lv_obj_t * label = lv_label_create(lv_screen_active());
-    lv_label_set_text(label, "Hello world");
-    lv_obj_center(label);
+    ui_prepare();
 
     // Main loop
     while (aptMainLoop())
     {
+        u64 start = osGetTime();
         lv_timer_handler();
-		gspWaitForVBlank();
-		gfxSwapBuffers();
+        u64 end = osGetTime();
+        lv_label_set_text_fmt(fps_label, "render: %llums", end - start);
+
         hidScanInput();
 
-		// Your code goes here
         u32 kDown = hidKeysDown();
         if (kDown & KEY_START)
             break; // break in order to return to hbmenu
     }
 
-	gfxExit();
+    sys_free();
     return 0;
 }