diff --git a/examples/texture/README.md b/examples/texture/README.md new file mode 100644 index 00000000000..8a46fe3023e --- /dev/null +++ b/examples/texture/README.md @@ -0,0 +1,3 @@ +# Flutter Texture + +An example to show how to use custom Flutter textures. diff --git a/examples/texture/lib/main.dart b/examples/texture/lib/main.dart new file mode 100644 index 00000000000..2f0cc7eed35 --- /dev/null +++ b/examples/texture/lib/main.dart @@ -0,0 +1,94 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +import 'package:flutter/material.dart'; +import 'package:flutter/services.dart'; + +class TexturePage extends StatefulWidget { + const TexturePage({super.key}); + + @override + State createState() => _TexturePageState(); +} + +class _TexturePageState extends State { + static const int textureWidth = 300; + static const int textureHeight = 300; + static const MethodChannel channel = + MethodChannel('samples.flutter.io/texture'); + final Future textureId = + channel.invokeMethod('create', [textureWidth, textureHeight]); + + // Set the color of the texture. + Future setColor(int r, int g, int b) async { + await channel.invokeMethod('setColor', [r, g, b]); + } + + @override + Widget build(BuildContext context) { + return Scaffold( + appBar: AppBar( + backgroundColor: Theme.of(context).colorScheme.inversePrimary, + title: const Text('Texture Example'), + ), + body: Center( + child: Column( + mainAxisAlignment: MainAxisAlignment.center, + children: [ + FutureBuilder( + future: textureId, + builder: (BuildContext context, AsyncSnapshot snapshot) { + if (snapshot.hasData) { + if (snapshot.data != null) { + return SizedBox( + width: textureWidth.toDouble(), + height: textureHeight.toDouble(), + child: Texture(textureId: snapshot.data!), + ); + } else { + return const Text('Error creating texture'); + } + } else { + return const Text('Creating texture...'); + } + }, + ), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Flutter Navy'), + onPressed: () => setColor(0x04, 0x2b, 0x59)), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Flutter Blue'), + onPressed: () => setColor(0x05, 0x53, 0xb1)), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Flutter Sky'), + onPressed: () => setColor(0x02, 0x7d, 0xfd)), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Red'), + onPressed: () => setColor(0xf2, 0x5d, 0x50)), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Yellow'), + onPressed: () => setColor(0xff, 0xf2, 0x75)), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Purple'), + onPressed: () => setColor(0x62, 0x00, 0xee)), + const SizedBox(height: 10), + OutlinedButton( + child: const Text('Green'), + onPressed: () => setColor(0x1c, 0xda, 0xc5)), + ], + ), + ), + ); + } +} + +void main() { + runApp(const MaterialApp(home: TexturePage())); +} diff --git a/examples/texture/linux/CMakeLists.txt b/examples/texture/linux/CMakeLists.txt new file mode 100644 index 00000000000..af26da2160e --- /dev/null +++ b/examples/texture/linux/CMakeLists.txt @@ -0,0 +1,141 @@ +# Project-level configuration. +cmake_minimum_required(VERSION 3.10) +project(runner LANGUAGES CXX) +set(CMAKE_CXX_STANDARD 17) + +# The name of the executable created for the application. Change this to change +# the on-disk name of your application. +set(BINARY_NAME "texture") +# The unique GTK application identifier for this application. See: +# https://wiki.gnome.org/HowDoI/ChooseApplicationID +set(APPLICATION_ID "io.flutter.examples.texture") + +# Explicitly opt in to modern CMake behaviors to avoid warnings with recent +# versions of CMake. +cmake_policy(SET CMP0063 NEW) + +# Load bundled libraries from the lib/ directory relative to the binary. +set(CMAKE_INSTALL_RPATH "$ORIGIN/lib") + +# Root filesystem for cross-building. +if(FLUTTER_TARGET_PLATFORM_SYSROOT) + set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT}) + set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT}) + set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) + set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY) + set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) + set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) +endif() + +# Define build configuration options. +if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES) + set(CMAKE_BUILD_TYPE "Debug" CACHE + STRING "Flutter build mode" FORCE) + set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS + "Debug" "Profile" "Release") +endif() + +# Compilation settings that should be applied to most targets. +# +# Be cautious about adding new options here, as plugins use this function by +# default. In most cases, you should add new options to specific targets instead +# of modifying this function. +function(APPLY_STANDARD_SETTINGS TARGET) + target_compile_features(${TARGET} PUBLIC cxx_std_14) + target_compile_options(${TARGET} PRIVATE -Wall -Werror) + target_compile_options(${TARGET} PRIVATE "$<$>:-O3>") + target_compile_definitions(${TARGET} PRIVATE "$<$>:NDEBUG>") +endfunction() + +# Flutter library and tool build rules. +set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter") +add_subdirectory(${FLUTTER_MANAGED_DIR}) + +# System-level dependencies. +find_package(PkgConfig REQUIRED) +pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0) + +add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}") + +# Define the application target. To change its name, change BINARY_NAME above, +# not the value here, or `flutter run` will no longer work. +# +# Any new source files that you add to the application should be added here. +add_executable(${BINARY_NAME} + "main.cc" + "my_application.cc" + "my_texture.cc" + "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc" +) + +# Apply the standard set of build settings. This can be removed for applications +# that need different build settings. +apply_standard_settings(${BINARY_NAME}) + +# Add dependency libraries. Add any application-specific dependencies here. +target_link_libraries(${BINARY_NAME} PRIVATE flutter) +target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK) + +# Run the Flutter tool portions of the build. This must not be removed. +add_dependencies(${BINARY_NAME} flutter_assemble) + +# Only the install-generated bundle's copy of the executable will launch +# correctly, since the resources must in the right relative locations. To avoid +# people trying to run the unbundled copy, put it in a subdirectory instead of +# the default top-level location. +set_target_properties(${BINARY_NAME} + PROPERTIES + RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run" +) + + +# Generated plugin build rules, which manage building the plugins and adding +# them to the application. +include(flutter/generated_plugins.cmake) + + +# === Installation === +# By default, "installing" just makes a relocatable bundle in the build +# directory. +set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle") +if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) + set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE) +endif() + +# Start with a clean build bundle directory every time. +install(CODE " + file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\") + " COMPONENT Runtime) + +set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data") +set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib") + +install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}" + COMPONENT Runtime) + +install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" + COMPONENT Runtime) + +install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" + COMPONENT Runtime) + +foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES}) + install(FILES "${bundled_library}" + DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" + COMPONENT Runtime) +endforeach(bundled_library) + +# Fully re-copy the assets directory on each build to avoid having stale files +# from a previous install. +set(FLUTTER_ASSET_DIR_NAME "flutter_assets") +install(CODE " + file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\") + " COMPONENT Runtime) +install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}" + DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime) + +# Install the AOT library on non-Debug builds only. +if(NOT CMAKE_BUILD_TYPE MATCHES "Debug") + install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}" + COMPONENT Runtime) +endif() diff --git a/examples/texture/linux/flutter/CMakeLists.txt b/examples/texture/linux/flutter/CMakeLists.txt new file mode 100644 index 00000000000..d5bd01648a9 --- /dev/null +++ b/examples/texture/linux/flutter/CMakeLists.txt @@ -0,0 +1,88 @@ +# This file controls Flutter-level build steps. It should not be edited. +cmake_minimum_required(VERSION 3.10) + +set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral") + +# Configuration provided via flutter tool. +include(${EPHEMERAL_DIR}/generated_config.cmake) + +# TODO: Move the rest of this into files in ephemeral. See +# https://github.com/flutter/flutter/issues/57146. + +# Serves the same purpose as list(TRANSFORM ... PREPEND ...), +# which isn't available in 3.10. +function(list_prepend LIST_NAME PREFIX) + set(NEW_LIST "") + foreach(element ${${LIST_NAME}}) + list(APPEND NEW_LIST "${PREFIX}${element}") + endforeach(element) + set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE) +endfunction() + +# === Flutter Library === +# System-level dependencies. +find_package(PkgConfig REQUIRED) +pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0) +pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0) +pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0) + +set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so") + +# Published to parent scope for install step. +set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE) +set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE) +set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE) +set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE) + +list(APPEND FLUTTER_LIBRARY_HEADERS + "fl_basic_message_channel.h" + "fl_binary_codec.h" + "fl_binary_messenger.h" + "fl_dart_project.h" + "fl_engine.h" + "fl_json_message_codec.h" + "fl_json_method_codec.h" + "fl_message_codec.h" + "fl_method_call.h" + "fl_method_channel.h" + "fl_method_codec.h" + "fl_method_response.h" + "fl_plugin_registrar.h" + "fl_plugin_registry.h" + "fl_standard_message_codec.h" + "fl_standard_method_codec.h" + "fl_string_codec.h" + "fl_value.h" + "fl_view.h" + "flutter_linux.h" +) +list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/") +add_library(flutter INTERFACE) +target_include_directories(flutter INTERFACE + "${EPHEMERAL_DIR}" +) +target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}") +target_link_libraries(flutter INTERFACE + PkgConfig::GTK + PkgConfig::GLIB + PkgConfig::GIO +) +add_dependencies(flutter flutter_assemble) + +# === Flutter tool backend === +# _phony_ is a non-existent file to force this command to run every time, +# since currently there's no way to get a full input/output list from the +# flutter tool. +add_custom_command( + OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS} + ${CMAKE_CURRENT_BINARY_DIR}/_phony_ + COMMAND ${CMAKE_COMMAND} -E env + ${FLUTTER_TOOL_ENVIRONMENT} + "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh" + ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE} + VERBATIM +) +add_custom_target(flutter_assemble DEPENDS + "${FLUTTER_LIBRARY}" + ${FLUTTER_LIBRARY_HEADERS} +) diff --git a/examples/texture/linux/main.cc b/examples/texture/linux/main.cc new file mode 100644 index 00000000000..281a29e16b5 --- /dev/null +++ b/examples/texture/linux/main.cc @@ -0,0 +1,10 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "my_application.h" + +int main(int argc, char** argv) { + g_autoptr(MyApplication) app = my_application_new(); + return g_application_run(G_APPLICATION(app), argc, argv); +} diff --git a/examples/texture/linux/my_application.cc b/examples/texture/linux/my_application.cc new file mode 100644 index 00000000000..f46cf9ca471 --- /dev/null +++ b/examples/texture/linux/my_application.cc @@ -0,0 +1,172 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "my_application.h" + +#include + +#include "my_texture.h" +#ifdef GDK_WINDOWING_X11 +#include +#endif + +#include "flutter/generated_plugin_registrant.h" + +struct _MyApplication { + GtkApplication parent_instance; + + // Channel to receive texture requests from Flutter. + FlMethodChannel* texture_channel; + + // Texture we've created. + MyTexture* texture; + + FlView* view; +}; + +G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION) + +// Handle request to create the texture. +static FlMethodResponse* handle_create(MyApplication* self, + FlMethodCall* method_call) { + if (self->texture != nullptr) { + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "Error", "texture already created", nullptr)); + } + + FlValue* args = fl_method_call_get_args(method_call); + if (fl_value_get_type(args) != FL_VALUE_TYPE_LIST || + fl_value_get_length(args) != 2) { + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "Invalid args", "Invalid create args", nullptr)); + } + FlValue* width_value = fl_value_get_list_value(args, 0); + FlValue* height_value = fl_value_get_list_value(args, 1); + if (fl_value_get_type(width_value) != FL_VALUE_TYPE_INT || + fl_value_get_type(height_value) != FL_VALUE_TYPE_INT) { + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "Invalid args", "Invalid create args", nullptr)); + } + + FlEngine* engine = fl_view_get_engine(self->view); + FlTextureRegistrar* texture_registrar = + fl_engine_get_texture_registrar(engine); + + self->texture = + my_texture_new(fl_value_get_int(width_value), + fl_value_get_int(height_value), 0x05, 0x53, 0xb1); + if (!fl_texture_registrar_register_texture(texture_registrar, + FL_TEXTURE(self->texture))) { + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "Error", "Failed to register texture", nullptr)); + } + + // Return the texture ID to Flutter so it can use this texture. + g_autoptr(FlValue) id = + fl_value_new_int(fl_texture_get_id(FL_TEXTURE(self->texture))); + return FL_METHOD_RESPONSE(fl_method_success_response_new(id)); +} + +// Handle request to set the texture color. +static FlMethodResponse* handle_set_color(MyApplication* self, + FlMethodCall* method_call) { + FlValue* args = fl_method_call_get_args(method_call); + if (fl_value_get_type(args) != FL_VALUE_TYPE_LIST || + fl_value_get_length(args) != 3) { + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "Invalid args", "Invalid setColor args", nullptr)); + } + FlValue* r_value = fl_value_get_list_value(args, 0); + FlValue* g_value = fl_value_get_list_value(args, 1); + FlValue* b_value = fl_value_get_list_value(args, 2); + if (fl_value_get_type(r_value) != FL_VALUE_TYPE_INT || + fl_value_get_type(g_value) != FL_VALUE_TYPE_INT || + fl_value_get_type(b_value) != FL_VALUE_TYPE_INT) { + return FL_METHOD_RESPONSE(fl_method_error_response_new( + "Invalid args", "Invalid setColor args", nullptr)); + } + + FlEngine* engine = fl_view_get_engine(self->view); + FlTextureRegistrar* texture_registrar = + fl_engine_get_texture_registrar(engine); + + // Redraw in requested color. + my_texture_set_color(self->texture, fl_value_get_int(r_value), + fl_value_get_int(g_value), fl_value_get_int(b_value)); + + // Notify Flutter the texture has changed. + fl_texture_registrar_mark_texture_frame_available(texture_registrar, + FL_TEXTURE(self->texture)); + + return FL_METHOD_RESPONSE(fl_method_success_response_new(nullptr)); +} + +// Handle texture requests from Flutter. +static void texture_channel_method_cb(FlMethodChannel* channel, + FlMethodCall* method_call, + gpointer user_data) { + MyApplication* self = MY_APPLICATION(user_data); + + const char* name = fl_method_call_get_name(method_call); + if (g_str_equal(name, "create")) { + g_autoptr(FlMethodResponse) response = handle_create(self, method_call); + fl_method_call_respond(method_call, response, NULL); + } else if (g_str_equal(name, "setColor")) { + g_autoptr(FlMethodResponse) response = handle_set_color(self, method_call); + fl_method_call_respond(method_call, response, NULL); + } else { + fl_method_call_respond_not_implemented(method_call, NULL); + } +} + +// Implements GObject::dispose. +static void my_application_dispose(GObject* object) { + MyApplication* self = MY_APPLICATION(object); + + g_clear_object(&self->texture_channel); + g_clear_object(&self->texture); + + G_OBJECT_CLASS(my_application_parent_class)->dispose(object); +} + +// Implements GApplication::activate. +static void my_application_activate(GApplication* application) { + MyApplication* self = MY_APPLICATION(application); + GtkWindow* window = + GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application))); + + gtk_window_set_default_size(window, 1280, 720); + gtk_widget_show(GTK_WIDGET(window)); + + g_autoptr(FlDartProject) project = fl_dart_project_new(); + self->view = fl_view_new(project); + gtk_widget_show(GTK_WIDGET(self->view)); + gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(self->view)); + + // Create channel to handle texture requests from Flutter. + FlEngine* engine = fl_view_get_engine(self->view); + g_autoptr(FlStandardMethodCodec) codec = fl_standard_method_codec_new(); + self->texture_channel = fl_method_channel_new( + fl_engine_get_binary_messenger(engine), "samples.flutter.io/texture", + FL_METHOD_CODEC(codec)); + fl_method_channel_set_method_call_handler( + self->texture_channel, texture_channel_method_cb, self, nullptr); + + fl_register_plugins(FL_PLUGIN_REGISTRY(self->view)); + + gtk_widget_grab_focus(GTK_WIDGET(self->view)); +} + +static void my_application_class_init(MyApplicationClass* klass) { + G_OBJECT_CLASS(klass)->dispose = my_application_dispose; + G_APPLICATION_CLASS(klass)->activate = my_application_activate; +} + +static void my_application_init(MyApplication* self) {} + +MyApplication* my_application_new() { + return MY_APPLICATION(g_object_new(my_application_get_type(), + "application-id", APPLICATION_ID, "flags", + G_APPLICATION_NON_UNIQUE, nullptr)); +} diff --git a/examples/texture/linux/my_application.h b/examples/texture/linux/my_application.h new file mode 100644 index 00000000000..8c66ec48543 --- /dev/null +++ b/examples/texture/linux/my_application.h @@ -0,0 +1,22 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef FLUTTER_MY_APPLICATION_H_ +#define FLUTTER_MY_APPLICATION_H_ + +#include + +G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION, + GtkApplication) + +/** + * my_application_new: + * + * Creates a new Flutter-based application. + * + * Returns: a new #MyApplication. + */ +MyApplication* my_application_new(); + +#endif // FLUTTER_MY_APPLICATION_H_ diff --git a/examples/texture/linux/my_texture.cc b/examples/texture/linux/my_texture.cc new file mode 100644 index 00000000000..5690ad00045 --- /dev/null +++ b/examples/texture/linux/my_texture.cc @@ -0,0 +1,72 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "my_texture.h" + +// An object that generates a texture for Flutter. +struct _MyTexture { + FlPixelBufferTexture parent_instance; + + // Dimensions of texture. + uint32_t width; + uint32_t height; + + // Buffer used to store texture. + uint8_t* buffer; +}; + +G_DEFINE_TYPE(MyTexture, my_texture, fl_pixel_buffer_texture_get_type()) + +// Implements GObject::dispose. +static void my_texture_dispose(GObject* object) { + MyTexture* self = MY_TEXTURE(object); + + free(self->buffer); + + G_OBJECT_CLASS(my_texture_parent_class)->dispose(object); +} + +// Implements FlPixelBufferTexture::copy_pixels. +static gboolean my_texture_copy_pixels(FlPixelBufferTexture* texture, + const uint8_t** out_buffer, + uint32_t* width, uint32_t* height, + GError** error) { + MyTexture* self = MY_TEXTURE(texture); + *out_buffer = self->buffer; + *width = self->width; + *height = self->height; + return TRUE; +} + +static void my_texture_class_init(MyTextureClass* klass) { + G_OBJECT_CLASS(klass)->dispose = my_texture_dispose; + FL_PIXEL_BUFFER_TEXTURE_CLASS(klass)->copy_pixels = my_texture_copy_pixels; +} + +static void my_texture_init(MyTexture* self) {} + +MyTexture* my_texture_new(uint32_t width, uint32_t height, uint8_t r, uint8_t g, + uint8_t b) { + MyTexture* self = MY_TEXTURE(g_object_new(my_texture_get_type(), nullptr)); + self->width = width; + self->height = height; + self->buffer = static_cast(malloc(self->width * self->height * 4)); + my_texture_set_color(self, r, g, b); + return self; +} + +// Draws the texture with the requested color. +void my_texture_set_color(MyTexture* self, uint8_t r, uint8_t g, uint8_t b) { + g_return_if_fail(MY_IS_TEXTURE(self)); + + for (size_t y = 0; y < self->height; y++) { + for (size_t x = 0; x < self->width; x++) { + uint8_t* pixel = self->buffer + (y * self->width * 4) + (x * 4); + pixel[0] = r; + pixel[1] = g; + pixel[2] = b; + pixel[3] = 255; + } + } +} diff --git a/examples/texture/linux/my_texture.h b/examples/texture/linux/my_texture.h new file mode 100644 index 00000000000..2b8cf82ab65 --- /dev/null +++ b/examples/texture/linux/my_texture.h @@ -0,0 +1,39 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef FLUTTER_MY_TEXTURE_H_ +#define FLUTTER_MY_TEXTURE_H_ + +#include + +G_DECLARE_FINAL_TYPE(MyTexture, my_texture, MY, TEXTURE, FlPixelBufferTexture) + +/** + * my_texture_new: + * @self: a #MyTexture. + * @width: width of texture in pixels. + * @height: height of texture in pixels. + * @r: red value for texture color. + * @g: green value for texture color. + * @b: blue value for texture color. + * + * Creates a new texture containing a single color for Flutter to render with. + * + * Returns: a new #MyTexture. + */ +MyTexture* my_texture_new(uint32_t width, uint32_t height, uint8_t r, uint8_t g, + uint8_t b); + +/** + * my_texture_new: + * @self: a #MyTexture. + * @r: red value for texture color. + * @g: green value for texture color. + * @b: blue value for texture color. + * + * Sets the color the texture contains. + */ +void my_texture_set_color(MyTexture* self, uint8_t r, uint8_t g, uint8_t b); + +#endif // FLUTTER_MY_TEXTURE_H_ diff --git a/examples/texture/pubspec.yaml b/examples/texture/pubspec.yaml new file mode 100644 index 00000000000..20cbb697abf --- /dev/null +++ b/examples/texture/pubspec.yaml @@ -0,0 +1,67 @@ +name: texture + +environment: + sdk: '>=3.0.0-0 <4.0.0' + +dependencies: + flutter: + sdk: flutter + + characters: 1.3.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + collection: 1.17.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + material_color_utilities: 0.5.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + meta: 1.9.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + vector_math: 2.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + web: 0.1.4-beta # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + +dev_dependencies: + flutter_test: + sdk: flutter + test: 1.24.3 + + _fe_analyzer_shared: 61.0.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + analyzer: 5.13.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + args: 2.4.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + async: 2.11.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + boolean_selector: 2.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + clock: 1.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + convert: 3.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + coverage: 1.6.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + crypto: 3.0.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + fake_async: 1.3.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + file: 6.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + frontend_server_client: 3.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + glob: 2.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + http_multi_server: 3.2.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + http_parser: 4.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + io: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + js: 0.6.7 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + logging: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + matcher: 0.12.16 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + mime: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + node_preamble: 2.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + package_config: 2.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + path: 1.8.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + pool: 1.5.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + pub_semver: 2.1.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + shelf: 1.4.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + shelf_packages_handler: 3.0.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + shelf_static: 1.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + shelf_web_socket: 1.0.4 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + source_map_stack_trace: 2.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + source_maps: 0.10.12 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + source_span: 1.10.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + stack_trace: 1.11.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + stream_channel: 2.1.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + string_scanner: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + term_glyph: 1.2.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + test_api: 0.6.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + test_core: 0.5.3 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + typed_data: 1.3.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + vm_service: 11.7.1 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + watcher: 1.1.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + web_socket_channel: 2.4.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + webkit_inspection_protocol: 1.2.0 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + yaml: 3.1.2 # THIS LINE IS AUTOGENERATED - TO UPDATE USE "flutter update-packages --force-upgrade" + +# PUBSPEC CHECKSUM: 3549 diff --git a/examples/texture/test/texture_test.dart b/examples/texture/test/texture_test.dart new file mode 100644 index 00000000000..bd8faa994d9 --- /dev/null +++ b/examples/texture/test/texture_test.dart @@ -0,0 +1,16 @@ +// Copyright 2014 The Flutter Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +import 'package:flutter_test/flutter_test.dart'; +import 'package:texture/main.dart' as texture; + +void main() { + testWidgets('Texture smoke test', (WidgetTester tester) async { + texture + .main(); // builds the app and schedules a frame but doesn't trigger one + await tester.pump(); // triggers a frame + + expect(find.text('Fluter Blue'), findsOneWidget); + }); +}