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Added applet/screenshot-overlay example.
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‎applet/screenshot-overlay/Makefile

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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITPRO)),)
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$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITPRO)/libnx/switch_rules
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#---------------------------------------------------------------------------------
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# TARGET is the name of the output
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# BUILD is the directory where object files & intermediate files will be placed
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# SOURCES is a list of directories containing source code
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# DATA is a list of directories containing data files
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# INCLUDES is a list of directories containing header files
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# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
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#
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# NO_ICON: if set to anything, do not use icon.
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# NO_NACP: if set to anything, no .nacp file is generated.
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# APP_TITLE is the name of the app stored in the .nacp file (Optional)
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# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
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# APP_VERSION is the version of the app stored in the .nacp file (Optional)
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# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
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# ICON is the filename of the icon (.jpg), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.jpg
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# - icon.jpg
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# - <libnx folder>/default_icon.jpg
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#
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# CONFIG_JSON is the filename of the NPDM config file (.json), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.json
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# - config.json
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# If a JSON file is provided or autodetected, an ExeFS PFS0 (.nsp) is built instead
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# of a homebrew executable (.nro). This is intended to be used for sysmodules.
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# NACP building is skipped as well.
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := source
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DATA := data
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INCLUDES := include
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#ROMFS := romfs
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv8-a+crc+crypto -mtune=cortex-a57 -mtp=soft -fPIE
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CFLAGS := -g -Wall -O2 -ffunction-sections \
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$(ARCH) $(DEFINES)
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CFLAGS += $(INCLUDE) -D__SWITCH__
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
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LIBS := -lnx
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#---------------------------------------------------------------------------------
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# list of directories containing libraries, this must be the top level containing
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# include and lib
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#---------------------------------------------------------------------------------
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LIBDIRS := $(PORTLIBS) $(LIBNX)
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
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BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES_BIN := $(addsuffix .o,$(BINFILES))
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export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export OFILES := $(OFILES_BIN) $(OFILES_SRC)
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export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES)))
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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ifeq ($(strip $(CONFIG_JSON)),)
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jsons := $(wildcard *.json)
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ifneq (,$(findstring $(TARGET).json,$(jsons)))
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export APP_JSON := $(TOPDIR)/$(TARGET).json
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else
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ifneq (,$(findstring config.json,$(jsons)))
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export APP_JSON := $(TOPDIR)/config.json
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endif
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endif
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else
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export APP_JSON := $(TOPDIR)/$(CONFIG_JSON)
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endif
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ifeq ($(strip $(ICON)),)
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icons := $(wildcard *.jpg)
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ifneq (,$(findstring $(TARGET).jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/$(TARGET).jpg
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else
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ifneq (,$(findstring icon.jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/icon.jpg
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endif
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endif
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else
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export APP_ICON := $(TOPDIR)/$(ICON)
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endif
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ifeq ($(strip $(NO_ICON)),)
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export NROFLAGS += --icon=$(APP_ICON)
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endif
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ifeq ($(strip $(NO_NACP)),)
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export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
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endif
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ifneq ($(APP_TITLEID),)
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export NACPFLAGS += --titleid=$(APP_TITLEID)
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endif
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ifneq ($(ROMFS),)
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export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
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endif
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.PHONY: $(BUILD) clean all
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#---------------------------------------------------------------------------------
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all: $(BUILD)
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$(BUILD):
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@[ -d $@ ] || mkdir -p $@
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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ifeq ($(strip $(APP_JSON)),)
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@rm -fr $(BUILD) $(TARGET).nro $(TARGET).nacp $(TARGET).elf
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else
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@rm -fr $(BUILD) $(TARGET).nsp $(TARGET).nso $(TARGET).npdm $(TARGET).elf
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endif
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#---------------------------------------------------------------------------------
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else
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.PHONY: all
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(APP_JSON)),)
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all : $(OUTPUT).nro
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ifeq ($(strip $(NO_NACP)),)
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$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp
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else
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$(OUTPUT).nro : $(OUTPUT).elf
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endif
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else
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all : $(OUTPUT).nsp
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$(OUTPUT).nsp : $(OUTPUT).nso $(OUTPUT).npdm
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$(OUTPUT).nso : $(OUTPUT).elf
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endif
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$(OUTPUT).elf : $(OFILES)
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$(OFILES_SRC) : $(HFILES_BIN)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o %_bin.h : %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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-include $(DEPENDS)
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------

‎applet/screenshot-overlay/source/main.c

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// Include the most common headers from the C standard library
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// Include the main libnx system header, for Switch development
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#include <switch.h>
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// This example shows how to use applet ApplicationCopyright (used as a screenshot overlay), see also libnx applet.h.
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// Main program entrypoint
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int main(int argc, char* argv[])
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{
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// This example uses a text console, as a simple way to output text to the screen.
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// If you want to write a software-rendered graphics application,
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// take a look at the graphics/simplegfx example, which uses the libnx Framebuffer API instead.
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// If on the other hand you want to write an OpenGL based application,
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// take a look at the graphics/opengl set of examples, which uses EGL instead.
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consoleInit(NULL);
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printf("screenshot-overlay example\n");
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// Setup the RGBA8 image.
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Result rc=0;
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size_t size = 128*128*4;
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u8 *tmpbuf = malloc(size);
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if (tmpbuf)
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memset(tmpbuf, 0xff, size); // Set the image to all white.
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else {
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rc = 1;
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printf("Failed to allocate memory.\n");
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}
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// Initialize.
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if (R_SUCCEEDED(rc)) {
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rc = appletInitializeApplicationCopyrightFrameBuffer();
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printf("appletInitializeApplicationCopyrightFrameBuffer(): 0x%x\n", rc);
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}
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// Set the image.
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if (R_SUCCEEDED(rc)) {
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rc = appletSetApplicationCopyrightImage(tmpbuf, size, 0, 0, 128, 128, 1);
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printf("appletSetApplicationCopyrightImage(): 0x%x\n", rc);
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}
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// Set the overlay visibility in the screenshot. This is set to true by default, so normally this is only needed for disabling/re-enabling visibility.
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if (R_SUCCEEDED(rc)) {
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rc = appletSetApplicationCopyrightVisibility(true);
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printf("appletSetApplicationCopyrightVisibility(): 0x%x\n", rc);
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}
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free(tmpbuf);
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printf("Press + to exit.\n");
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// Main loop
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while (appletMainLoop())
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{
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// Scan all the inputs. This should be done once for each frame
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hidScanInput();
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// hidKeysDown returns information about which buttons have been
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// just pressed in this frame compared to the previous one
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u64 kDown = hidKeysDown(CONTROLLER_P1_AUTO);
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if (kDown & KEY_PLUS)
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break; // break in order to return to hbmenu
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// Update the console, sending a new frame to the display
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consoleUpdate(NULL);
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}
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// Deinitialize and clean up resources used by the console (important!)
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consoleExit(NULL);
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return 0;
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}

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