adding packages
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flutter/
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# Copyright 2018 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Example-specific variables.
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# To modify this Makefile for a different application, these are the values
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# that are mostly likely to need to be changed.
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# Executable name.
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BINARY_NAME=flutter_desktop_example
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# The C++ code for the embedder application.
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SOURCES=flutter_embedder_example.cc
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# Default build type. For a release build, set BUILD=release.
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# Currently this only sets NDEBUG, which is used to control the flags passed
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# to the Flutter engine in the example shell, and not the complation settings
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# (e.g., optimization level) of the C++ code.
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BUILD=debug
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# Configuration provided via flutter tool.
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include flutter/generated_config
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# Dependency locations
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FLUTTER_APP_CACHE_DIR=flutter/
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FLUTTER_APP_DIR=$(CURDIR)/..
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FLUTTER_APP_BUILD_DIR=$(FLUTTER_APP_DIR)/build
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OUT_DIR=$(FLUTTER_APP_BUILD_DIR)/linux
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# Libraries
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FLUTTER_LIB_NAME=flutter_linux
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FLUTTER_LIB=$(FLUTTER_APP_CACHE_DIR)/lib$(FLUTTER_LIB_NAME).so
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# Tools
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FLUTTER_BIN=$(FLUTTER_ROOT)/bin/flutter
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LINUX_BUILD=$(FLUTTER_ROOT)/packages/flutter_tools/bin/linux_backend.sh
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# Resources
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ICU_DATA_NAME=icudtl.dat
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ICU_DATA_SOURCE=$(FLUTTER_APP_CACHE_DIR)/$(ICU_DATA_NAME)
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FLUTTER_ASSETS_NAME=flutter_assets
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FLUTTER_ASSETS_SOURCE=$(FLUTTER_APP_BUILD_DIR)/$(FLUTTER_ASSETS_NAME)
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# Bundle structure
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BUNDLE_OUT_DIR=$(OUT_DIR)/$(BUILD)
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BUNDLE_DATA_DIR=$(BUNDLE_OUT_DIR)/data
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BUNDLE_LIB_DIR=$(BUNDLE_OUT_DIR)/lib
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BIN_OUT=$(BUNDLE_OUT_DIR)/$(BINARY_NAME)
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ICU_DATA_OUT=$(BUNDLE_DATA_DIR)/$(ICU_DATA_NAME)
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FLUTTER_LIB_OUT=$(BUNDLE_LIB_DIR)/$(notdir $(FLUTTER_LIB))
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# Add relevant code from the wrapper library, which is intended to be statically
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# built into the client.
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WRAPPER_ROOT=$(FLUTTER_APP_CACHE_DIR)/cpp_client_wrapper
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WRAPPER_SOURCES= \
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$(WRAPPER_ROOT)/flutter_window_controller.cc \
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$(WRAPPER_ROOT)/plugin_registrar.cc \
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$(WRAPPER_ROOT)/engine_method_result.cc
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SOURCES+=$(WRAPPER_SOURCES)
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# Headers
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WRAPPER_INCLUDE_DIR=$(WRAPPER_ROOT)/include
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INCLUDE_DIRS=$(FLUTTER_APP_CACHE_DIR) $(WRAPPER_INCLUDE_DIR)
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# Build settings
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CXX=g++ -std=c++14
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CXXFLAGS.release=-DNDEBUG
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CXXFLAGS=-Wall -Werror $(CXXFLAGS.$(BUILD))
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CPPFLAGS=$(patsubst %,-I%,$(INCLUDE_DIRS))
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LDFLAGS=-L$(BUNDLE_LIB_DIR) \
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-l$(FLUTTER_LIB_NAME) \
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-Wl,-rpath=\$$ORIGIN/lib
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# Targets
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.PHONY: all
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all: $(BIN_OUT) bundle
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# This is a phony target because the flutter tool cannot describe
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# its inputs and outputs yet.
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.PHONY: sync
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sync: flutter/generated_config
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$(FLUTTER_ROOT)/packages/flutter_tools/bin/tool_backend.sh linux-x64 $(BUILD)
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.PHONY: bundle
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bundle: $(ICU_DATA_OUT) $(FLUTTER_LIB_OUT) bundleflutterassets
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$(BIN_OUT): $(SOURCES) $(FLUTTER_LIB_OUT)
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mkdir -p $(@D)
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$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(SOURCES) $(LDFLAGS) -o $@
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$(WRAPPER_SOURCES) $(FLUTTER_LIB) $(ICU_DATA_SOURCE) $(FLUTTER_ASSETS_SOURCE): \
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| sync
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$(FLUTTER_LIB_OUT): $(FLUTTER_LIB)
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mkdir -p $(BUNDLE_LIB_DIR)
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cp $(FLUTTER_LIB) $(BUNDLE_LIB_DIR)
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$(ICU_DATA_OUT): $(ICU_DATA_SOURCE)
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mkdir -p $(dir $(ICU_DATA_OUT))
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cp $(ICU_DATA_SOURCE) $(ICU_DATA_OUT)
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# Fully re-copy the assets directory on each build to avoid having to keep a
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# comprehensive list of all asset files here, which would be fragile to changes
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# in the Flutter example (e.g., adding a new font to pubspec.yaml would require
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# changes here).
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.PHONY: bundleflutterassets
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bundleflutterassets: $(FLUTTER_ASSETS_SOURCE)
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mkdir -p $(BUNDLE_DATA_DIR)
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rsync -rpu --delete $(FLUTTER_ASSETS_SOURCE) $(BUNDLE_DATA_DIR)
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.PHONY: clean
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clean:
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rm -rf $(OUT_DIR); \
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cd $(FLUTTER_APP_DIR); \
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$(FLUTTER_BIN) clean
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// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <linux/limits.h>
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#include <unistd.h>
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#include <cstdlib>
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#include <iostream>
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#include <memory>
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#include <vector>
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#include <flutter/flutter_window_controller.h>
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namespace {
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// Returns the path of the directory containing this executable, or an empty
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// string if the directory cannot be found.
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std::string GetExecutableDirectory() {
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char buffer[PATH_MAX + 1];
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ssize_t length = readlink("/proc/self/exe", buffer, sizeof(buffer));
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if (length > PATH_MAX) {
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std::cerr << "Couldn't locate executable" << std::endl;
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return "";
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}
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std::string executable_path(buffer, length);
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size_t last_separator_position = executable_path.find_last_of('/');
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if (last_separator_position == std::string::npos) {
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std::cerr << "Unabled to find parent directory of " << executable_path
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<< std::endl;
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return "";
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}
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return executable_path.substr(0, last_separator_position);
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}
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} // namespace
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int main(int argc, char **argv) {
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// Resources are located relative to the executable.
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std::string base_directory = GetExecutableDirectory();
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if (base_directory.empty()) {
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base_directory = ".";
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}
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std::string data_directory = base_directory + "/data";
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std::string assets_path = data_directory + "/flutter_assets";
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std::string icu_data_path = data_directory + "/icudtl.dat";
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// Arguments for the Flutter Engine.
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std::vector<std::string> arguments;
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flutter::FlutterWindowController flutter_controller(icu_data_path);
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// Start the engine.
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if (!flutter_controller.CreateWindow(800, 600, "Flutter Desktop Example",
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assets_path, arguments)) {
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return EXIT_FAILURE;
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}
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// Run until the window is closed.
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flutter_controller.RunEventLoop();
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return EXIT_SUCCESS;
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}
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