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Refactor FlutterEngine usage in Linux shell (flutter#17363)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| // Copyright 2013 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. | ||
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| #include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h" | ||
| #include "flutter/shell/platform/linux/fl_engine_private.h" | ||
| #include "flutter/shell/platform/linux/fl_renderer.h" | ||
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| #include <gmodule.h> | ||
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| struct _FlEngine { | ||
| GObject parent_instance; | ||
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| FlDartProject* project; | ||
| FlRenderer* renderer; | ||
| FLUTTER_API_SYMBOL(FlutterEngine) engine; | ||
| }; | ||
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| G_DEFINE_QUARK(fl_engine_error_quark, fl_engine_error) | ||
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| G_DEFINE_TYPE(FlEngine, fl_engine, G_TYPE_OBJECT) | ||
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| // Callback from Flutter engine that are passed to the renderer | ||
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| static void* fl_engine_gl_proc_resolver(void* user_data, const char* name) { | ||
| FlEngine* self = static_cast<FlEngine*>(user_data); | ||
| return fl_renderer_get_proc_address(self->renderer, name); | ||
| } | ||
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| static bool fl_engine_gl_make_current(void* user_data) { | ||
| FlEngine* self = static_cast<FlEngine*>(user_data); | ||
| g_autoptr(GError) error = nullptr; | ||
| gboolean result = fl_renderer_make_current(self->renderer, &error); | ||
| if (!result) | ||
| g_warning("%s", error->message); | ||
| return result; | ||
| } | ||
|
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| static bool fl_engine_gl_clear_current(void* user_data) { | ||
| FlEngine* self = static_cast<FlEngine*>(user_data); | ||
| g_autoptr(GError) error = nullptr; | ||
| gboolean result = fl_renderer_clear_current(self->renderer, &error); | ||
| if (!result) | ||
| g_warning("%s", error->message); | ||
| return result; | ||
| } | ||
|
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| static uint32_t fl_engine_gl_fbo_callback(void* user_data) { | ||
| FlEngine* self = static_cast<FlEngine*>(user_data); | ||
| return fl_renderer_get_fbo(self->renderer); | ||
| } | ||
|
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| static bool fl_engine_gl_present(void* user_data) { | ||
| FlEngine* self = static_cast<FlEngine*>(user_data); | ||
| g_autoptr(GError) error = nullptr; | ||
| gboolean result = fl_renderer_present(self->renderer, &error); | ||
| if (!result) | ||
| g_warning("%s", error->message); | ||
| return result; | ||
| } | ||
|
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| static void fl_engine_dispose(GObject* object) { | ||
| FlEngine* self = FL_ENGINE(object); | ||
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| g_clear_object(&self->project); | ||
| g_clear_object(&self->renderer); | ||
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| FlutterEngineShutdown(self->engine); | ||
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| G_OBJECT_CLASS(fl_engine_parent_class)->dispose(object); | ||
| } | ||
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| static void fl_engine_class_init(FlEngineClass* klass) { | ||
| G_OBJECT_CLASS(klass)->dispose = fl_engine_dispose; | ||
| } | ||
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| static void fl_engine_init(FlEngine* self) {} | ||
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| FlEngine* fl_engine_new(FlDartProject* project, FlRenderer* renderer) { | ||
| g_return_val_if_fail(FL_IS_DART_PROJECT(project), nullptr); | ||
| g_return_val_if_fail(FL_IS_RENDERER(renderer), nullptr); | ||
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| FlEngine* self = | ||
| static_cast<FlEngine*>(g_object_new(fl_engine_get_type(), nullptr)); | ||
| self->project = static_cast<FlDartProject*>(g_object_ref(project)); | ||
| self->renderer = static_cast<FlRenderer*>(g_object_ref(renderer)); | ||
| return self; | ||
| } | ||
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| gboolean fl_engine_start(FlEngine* self, GError** error) { | ||
| g_return_val_if_fail(FL_IS_ENGINE(self), FALSE); | ||
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| if (!fl_renderer_start(self->renderer, error)) | ||
| return FALSE; | ||
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| FlutterRendererConfig config = {}; | ||
| config.type = kOpenGL; | ||
| config.open_gl.struct_size = sizeof(FlutterOpenGLRendererConfig); | ||
| config.open_gl.gl_proc_resolver = fl_engine_gl_proc_resolver; | ||
| config.open_gl.make_current = fl_engine_gl_make_current; | ||
| config.open_gl.clear_current = fl_engine_gl_clear_current; | ||
| config.open_gl.fbo_callback = fl_engine_gl_fbo_callback; | ||
| config.open_gl.present = fl_engine_gl_present; | ||
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| FlutterProjectArgs args = {}; | ||
| args.struct_size = sizeof(FlutterProjectArgs); | ||
| args.assets_path = fl_dart_project_get_assets_path(self->project); | ||
| args.icu_data_path = fl_dart_project_get_icu_data_path(self->project); | ||
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| FlutterEngineResult result = FlutterEngineInitialize( | ||
| FLUTTER_ENGINE_VERSION, &config, &args, self, &self->engine); | ||
| if (result != kSuccess) { | ||
| g_set_error(error, fl_engine_error_quark(), FL_ENGINE_ERROR_FAILED, | ||
| "Failed to initialize Flutter engine"); | ||
| return FALSE; | ||
| } | ||
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| result = FlutterEngineRunInitialized(self->engine); | ||
| if (result != kSuccess) { | ||
| g_set_error(error, fl_engine_error_quark(), FL_ENGINE_ERROR_FAILED, | ||
| "Failed to run Flutter engine"); | ||
| return FALSE; | ||
| } | ||
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| return TRUE; | ||
| } | ||
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| void fl_engine_send_window_metrics_event(FlEngine* self, | ||
| size_t width, | ||
| size_t height, | ||
| double pixel_ratio) { | ||
| g_return_if_fail(FL_IS_ENGINE(self)); | ||
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| FlutterWindowMetricsEvent event = {}; | ||
| event.struct_size = sizeof(FlutterWindowMetricsEvent); | ||
| event.width = width; | ||
| event.height = height; | ||
| event.pixel_ratio = pixel_ratio; | ||
| FlutterEngineSendWindowMetricsEvent(self->engine, &event); | ||
| } | ||
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| void fl_engine_send_mouse_pointer_event(FlEngine* self, | ||
| FlutterPointerPhase phase, | ||
| size_t timestamp, | ||
| double x, | ||
| double y, | ||
| int64_t buttons) { | ||
| g_return_if_fail(FL_IS_ENGINE(self)); | ||
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| FlutterPointerEvent fl_event = {}; | ||
| fl_event.struct_size = sizeof(fl_event); | ||
| fl_event.phase = phase; | ||
| fl_event.timestamp = timestamp; | ||
| fl_event.x = x; | ||
| fl_event.y = y; | ||
| fl_event.device_kind = kFlutterPointerDeviceKindMouse; | ||
| fl_event.buttons = buttons; | ||
| FlutterEngineSendPointerEvent(self->engine, &fl_event, 1); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| // Copyright 2013 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. | ||
|
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| #ifndef FLUTTER_SHELL_PLATFORM_LINUX_FL_ENGINE_PRIVATE_H_ | ||
| #define FLUTTER_SHELL_PLATFORM_LINUX_FL_ENGINE_PRIVATE_H_ | ||
|
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| #include <glib-object.h> | ||
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| #include "flutter/shell/platform/embedder/embedder.h" | ||
| #include "flutter/shell/platform/linux/fl_renderer.h" | ||
| #include "flutter/shell/platform/linux/public/flutter_linux/fl_dart_project.h" | ||
| #include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h" | ||
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| G_BEGIN_DECLS | ||
|
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| /** | ||
| * FlEngineError: | ||
| * Errors for #FlEngine objects to set on failures. | ||
| */ | ||
|
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| typedef enum { | ||
| FL_ENGINE_ERROR_FAILED, | ||
| } FlEngineError; | ||
|
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| GQuark fl_engine_error_quark(void) G_GNUC_CONST; | ||
|
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| /** | ||
| * fl_engine_new: | ||
| * @project: a #FlDartProject | ||
| * @renderer: a #FlRenderer | ||
| * | ||
| * Creates a new Flutter engine. | ||
| * | ||
| * Returns: a #FlEngine | ||
| */ | ||
| FlEngine* fl_engine_new(FlDartProject* project, FlRenderer* renderer); | ||
|
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| /** | ||
| * fl_engine_start: | ||
| * @engine: a #FlEngine | ||
| * @error: (allow-none): #GError location to store the error occurring, or %NULL | ||
| * to ignore. | ||
| * | ||
| * Starts the Flutter engine. | ||
| * | ||
| * Returns: %TRUE on success | ||
| */ | ||
| gboolean fl_engine_start(FlEngine* engine, GError** error); | ||
|
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| /** | ||
| * fl_engine_send_window_metrics_event: | ||
| * @engine: a #FlEngine | ||
| * @width: width of the window in pixels. | ||
| * @height: height of the window in pixels. | ||
| * @pixel_ratio: scale factor for window. | ||
| * | ||
| * Sends a window metrics event to the engine. | ||
| */ | ||
| void fl_engine_send_window_metrics_event(FlEngine* engine, | ||
| size_t width, | ||
| size_t height, | ||
| double pixel_ratio); | ||
|
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| /** | ||
| * fl_engine_send_mouse_pointer_event: | ||
| * @engine: a #FlEngine | ||
| * @phase: mouse phase. | ||
| * @timestamp: time when event occurred in nanoseconds. | ||
| * @x: x location of mouse cursor. | ||
| * @y: y location of mouse cursor. | ||
| * @buttons: buttons that are pressed. | ||
| * | ||
| * Sends a mouse pointer event to the engine. | ||
| */ | ||
| void fl_engine_send_mouse_pointer_event(FlEngine* engine, | ||
| FlutterPointerPhase phase, | ||
| size_t timestamp, | ||
| double x, | ||
| double y, | ||
| int64_t buttons); | ||
|
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| G_END_DECLS | ||
|
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| #endif // FLUTTER_SHELL_PLATFORM_LINUX_FL_ENGINE_PRIVATE_H_ |
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