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| 1 | +// Copyright 2013 The Flutter Authors. All rights reserved. |
| 2 | +// Use of this source code is governed by a BSD-style license that can be |
| 3 | +// found in the LICENSE file. |
| 4 | + |
| 5 | +#include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h" |
| 6 | +#include "flutter/shell/platform/linux/fl_engine_private.h" |
| 7 | +#include "flutter/shell/platform/linux/fl_renderer.h" |
| 8 | + |
| 9 | +#include <gmodule.h> |
| 10 | + |
| 11 | +struct _FlEngine { |
| 12 | + GObject parent_instance; |
| 13 | + |
| 14 | + FlDartProject *project; |
| 15 | + FlRenderer* renderer; |
| 16 | + FLUTTER_API_SYMBOL(FlutterEngine) engine; |
| 17 | +}; |
| 18 | + |
| 19 | +G_DEFINE_TYPE(FlEngine, fl_engine, G_TYPE_OBJECT) |
| 20 | + |
| 21 | +static void* fl_engine_gl_proc_resolver(void* user_data, const char* name) { |
| 22 | + FlEngine* self = static_cast<FlEngine*>(user_data); |
| 23 | + return fl_renderer_get_proc_address(self->renderer, name); |
| 24 | +} |
| 25 | + |
| 26 | +static bool fl_engine_gl_make_current(void* user_data) { |
| 27 | + FlEngine* self = static_cast<FlEngine*>(user_data); |
| 28 | + g_autoptr(GError) error = NULL; |
| 29 | + gboolean result = fl_renderer_make_current(self->renderer, &error); |
| 30 | + if (!result) |
| 31 | + g_warning ("%s", error->message); |
| 32 | + return result; |
| 33 | +} |
| 34 | + |
| 35 | +static bool fl_engine_gl_clear_current(void* user_data) { |
| 36 | + FlEngine* self = static_cast<FlEngine*>(user_data); |
| 37 | + g_autoptr(GError) error = NULL; |
| 38 | + gboolean result = fl_renderer_clear_current(self->renderer, &error); |
| 39 | + if (!result) |
| 40 | + g_warning ("%s", error->message); |
| 41 | + return result; |
| 42 | +} |
| 43 | + |
| 44 | +static uint32_t fl_engine_gl_fbo_callback(void* user_data) { |
| 45 | + FlEngine* self = static_cast<FlEngine*>(user_data); |
| 46 | + return fl_renderer_get_fbo(self->renderer); |
| 47 | +} |
| 48 | + |
| 49 | +static bool fl_engine_gl_present(void* user_data) { |
| 50 | + FlEngine* self = static_cast<FlEngine*>(user_data); |
| 51 | + g_autoptr(GError) error = NULL; |
| 52 | + gboolean result = fl_renderer_present(self->renderer, &error); |
| 53 | + if (!result) |
| 54 | + g_warning ("%s", error->message); |
| 55 | + return result; |
| 56 | +} |
| 57 | + |
| 58 | +static void fl_engine_dispose(GObject* object) { |
| 59 | + FlEngine* self = FL_ENGINE(object); |
| 60 | + |
| 61 | + g_clear_object(&self->project); |
| 62 | + g_clear_object(&self->renderer); |
| 63 | + |
| 64 | + FlutterEngineDeinitialize(self->engine); |
| 65 | + FlutterEngineShutdown(self->engine); |
| 66 | + |
| 67 | + G_OBJECT_CLASS(fl_engine_parent_class)->dispose(object); |
| 68 | +} |
| 69 | + |
| 70 | +static void fl_engine_class_init(FlEngineClass* klass) { |
| 71 | + G_OBJECT_CLASS(klass)->dispose = fl_engine_dispose; |
| 72 | +} |
| 73 | + |
| 74 | +static void fl_engine_init(FlEngine* self) {} |
| 75 | + |
| 76 | +FlEngine* fl_engine_new(FlDartProject *project, FlRenderer* renderer) { |
| 77 | + g_return_val_if_fail (FL_IS_DART_PROJECT (project), nullptr); |
| 78 | + g_return_val_if_fail (FL_IS_RENDERER(renderer), nullptr); |
| 79 | + |
| 80 | + FlEngine* self = |
| 81 | + static_cast<FlEngine*>(g_object_new(fl_engine_get_type(), nullptr)); |
| 82 | + self->project = static_cast<FlDartProject*>(g_object_ref (project)); |
| 83 | + self->renderer = static_cast<FlRenderer*>(g_object_ref(renderer)); |
| 84 | + return self; |
| 85 | +} |
| 86 | + |
| 87 | +FlRenderer* fl_engine_get_renderer(FlEngine* self) { |
| 88 | + return self->renderer; |
| 89 | +} |
| 90 | + |
| 91 | +gboolean fl_engine_start(FlEngine* self, GError** error) { |
| 92 | + if (!fl_renderer_start(self->renderer, error)) |
| 93 | + return FALSE; |
| 94 | + |
| 95 | + FlutterRendererConfig config = {}; |
| 96 | + config.type = kOpenGL; |
| 97 | + config.open_gl.struct_size = sizeof(FlutterOpenGLRendererConfig); |
| 98 | + config.open_gl.gl_proc_resolver = fl_engine_gl_proc_resolver; |
| 99 | + config.open_gl.make_current = fl_engine_gl_make_current; |
| 100 | + config.open_gl.clear_current = fl_engine_gl_clear_current; |
| 101 | + config.open_gl.fbo_callback = fl_engine_gl_fbo_callback; |
| 102 | + config.open_gl.present = fl_engine_gl_present; |
| 103 | + |
| 104 | + FlutterProjectArgs args = {}; |
| 105 | + args.struct_size = sizeof(FlutterProjectArgs); |
| 106 | + args.assets_path = fl_dart_project_get_assets_path(self->project); |
| 107 | + args.icu_data_path = fl_dart_project_get_icu_data_path(self->project); |
| 108 | + |
| 109 | + FlutterEngineResult result = FlutterEngineInitialize( |
| 110 | + FLUTTER_ENGINE_VERSION, &config, &args, self, &self->engine); |
| 111 | + if (result != kSuccess) { |
| 112 | + g_set_error(error, fl_renderer_error_quark(), FL_RENDERER_ERROR_FAILED, |
| 113 | + "Failed to initialize Flutter engine"); |
| 114 | + return FALSE; |
| 115 | + } |
| 116 | + |
| 117 | + result = FlutterEngineRunInitialized(self->engine); |
| 118 | + if (result != kSuccess) { |
| 119 | + g_set_error(error, fl_renderer_error_quark(), FL_RENDERER_ERROR_FAILED, |
| 120 | + "Failed to run Flutter engine"); |
| 121 | + return FALSE; |
| 122 | + } |
| 123 | + |
| 124 | + return TRUE; |
| 125 | +} |
| 126 | + |
| 127 | +FlDartProject* fl_engine_get_project(FlEngine* self) { |
| 128 | + g_return_val_if_fail(FL_IS_ENGINE(self), nullptr); |
| 129 | + |
| 130 | + return self->project; |
| 131 | +} |
| 132 | + |
| 133 | +void fl_engine_send_window_metrics_event(FlEngine* self, |
| 134 | + size_t width, |
| 135 | + size_t height, |
| 136 | + double pixel_ratio) { |
| 137 | + FlutterWindowMetricsEvent event = {}; |
| 138 | + event.struct_size = sizeof(FlutterWindowMetricsEvent); |
| 139 | + event.width = width; |
| 140 | + event.height = height; |
| 141 | + event.pixel_ratio = pixel_ratio; |
| 142 | + FlutterEngineSendWindowMetricsEvent(self->engine, &event); |
| 143 | +} |
| 144 | + |
| 145 | +void |
| 146 | +fl_engine_send_mouse_pointer_event(FlEngine* self, |
| 147 | + FlutterPointerPhase phase, |
| 148 | + size_t timestamp, |
| 149 | + double x, |
| 150 | + double y, |
| 151 | + int64_t buttons) { |
| 152 | + FlutterPointerEvent fl_event = {}; |
| 153 | + fl_event.struct_size = sizeof(fl_event); |
| 154 | + fl_event.phase = phase; |
| 155 | + fl_event.timestamp = timestamp; |
| 156 | + fl_event.x = x; |
| 157 | + fl_event.y = y; |
| 158 | + fl_event.device_kind = kFlutterPointerDeviceKindMouse; |
| 159 | + fl_event.buttons = buttons; |
| 160 | + FlutterEngineSendPointerEvent(self->engine, &fl_event, 1); |
| 161 | +} |
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