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Diffstat (limited to 'src/drivers/Android/Fl_Android_Screen_Driver.H')
| -rw-r--r-- | src/drivers/Android/Fl_Android_Screen_Driver.H | 477 |
1 files changed, 477 insertions, 0 deletions
diff --git a/src/drivers/Android/Fl_Android_Screen_Driver.H b/src/drivers/Android/Fl_Android_Screen_Driver.H new file mode 100644 index 000000000..c2507c216 --- /dev/null +++ b/src/drivers/Android/Fl_Android_Screen_Driver.H @@ -0,0 +1,477 @@ +// +// "$Id: Fl_Android_Screen_Driver.H 12655 2018-02-09 14:39:42Z AlbrechtS $" +// +// Definition of Windows screen interface +// for the Fast Light Tool Kit (FLTK). +// +// Copyright 2010-2018 by Bill Spitzak and others. +// +// This library is free software. Distribution and use rights are outlined in +// the file "COPYING" which should have been included with this file. If this +// file is missing or damaged, see the license at: +// +// http://www.fltk.org/COPYING.php +// +// Please report all bugs and problems on the following page: +// +// http://www.fltk.org/str.php +// + +/** + \file Fl_WinAPI_Screen_Driver.H + \brief Definition of Windows screen interface. + */ + +#ifndef FL_WINAPI_SCREEN_DRIVER_H +#define FL_WINAPI_SCREEN_DRIVER_H + +#include <FL/Fl_Screen_Driver.H> +//#include <windows.h> + +class Fl_Window; + + +class FL_EXPORT Fl_Android_Screen_Driver : public Fl_Screen_Driver +{ + +#if 0 + +protected: + RECT screens[MAX_SCREENS]; + RECT work_area[MAX_SCREENS]; + float dpi[MAX_SCREENS][2]; + float scale_of_screen[MAX_SCREENS]; + + static BOOL CALLBACK screen_cb(HMONITOR mon, HDC, LPRECT r, LPARAM); + BOOL screen_cb(HMONITOR mon, HDC, LPRECT r); + int get_mouse_unscaled(int &mx, int &my); +#ifdef FLTK_HIDPI_SUPPORT + void init_screen_scale_factors(); +#endif + +#endif + +public: + Fl_Android_Screen_Driver() : Fl_Screen_Driver() { } + +#if 0 + Fl_WinAPI_Screen_Driver() : Fl_Screen_Driver() { + for (int i = 0; i < MAX_SCREENS; i++) scale_of_screen[i] = 1; + } + // --- display management + virtual int visual(int flags); + // --- screen configuration + virtual void init(); + virtual int x(); + virtual int y(); + virtual int w(); + virtual int h(); + virtual void screen_xywh(int &X, int &Y, int &W, int &H, int n); + virtual void screen_dpi(float &h, float &v, int n=0); + int screen_num_unscaled(int x, int y); + virtual void screen_work_area(int &X, int &Y, int &W, int &H, int n); + // --- audible output + virtual void beep(int type); + // --- global events + virtual void flush(); + virtual double wait(double time_to_wait); + virtual int ready(); + virtual void grab(Fl_Window* win); + // --- global colors + virtual void get_system_colors(); + virtual const char *get_system_scheme(); + // --- global timers + virtual void add_timeout(double time, Fl_Timeout_Handler cb, void *argp); + virtual void repeat_timeout(double time, Fl_Timeout_Handler cb, void *argp); + virtual int has_timeout(Fl_Timeout_Handler cb, void *argp); + virtual void remove_timeout(Fl_Timeout_Handler cb, void *argp); + virtual int dnd(int unused); + virtual int compose(int &del); + virtual Fl_RGB_Image *read_win_rectangle(int X, int Y, int w, int h); + Fl_RGB_Image *read_win_rectangle_unscaled(int X, int Y, int w, int h); + virtual int get_mouse(int &x, int &y); + virtual void enable_im(); + virtual void disable_im(); + virtual void open_display_platform(); + virtual void offscreen_size(Fl_Offscreen off, int &width, int &height); +#if defined(FLTK_HIDPI_SUPPORT) + virtual APP_SCALING_CAPABILITY rescalable() { + return PER_SCREEN_APP_SCALING; + } + virtual float scale(int n) { + return scale_of_screen[n]; + } + virtual void scale(int n, float f) { + scale_of_screen[n] = f; + } +#else + float DWM_scaling_factor(); +#endif + virtual float desktop_scale_factor(); + +#endif + +}; + + +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#ifndef _ANDROID_NATIVE_APP_GLUE_H +#define _ANDROID_NATIVE_APP_GLUE_H + +#include <poll.h> +#include <pthread.h> +#include <sched.h> + +#include <android/configuration.h> +#include <android/looper.h> +#include <android/native_activity.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * The native activity interface provided by <android/native_activity.h> + * is based on a set of application-provided callbacks that will be called + * by the Activity's main thread when certain events occur. + * + * This means that each one of this callbacks _should_ _not_ block, or they + * risk having the system force-close the application. This programming + * model is direct, lightweight, but constraining. + * + * The 'android_native_app_glue' static library is used to provide a different + * execution model where the application can implement its own main event + * loop in a different thread instead. Here's how it works: + * + * 1/ The application must provide a function named "android_main()" that + * will be called when the activity is created, in a new thread that is + * distinct from the activity's main thread. + * + * 2/ android_main() receives a pointer to a valid "android_app" structure + * that contains references to other important objects, e.g. the + * ANativeActivity obejct instance the application is running in. + * + * 3/ the "android_app" object holds an ALooper instance that already + * listens to two important things: + * + * - activity lifecycle events (e.g. "pause", "resume"). See APP_CMD_XXX + * declarations below. + * + * - input events coming from the AInputQueue attached to the activity. + * + * Each of these correspond to an ALooper identifier returned by + * ALooper_pollOnce with values of LOOPER_ID_MAIN and LOOPER_ID_INPUT, + * respectively. + * + * Your application can use the same ALooper to listen to additional + * file-descriptors. They can either be callback based, or with return + * identifiers starting with LOOPER_ID_USER. + * + * 4/ Whenever you receive a LOOPER_ID_MAIN or LOOPER_ID_INPUT event, + * the returned data will point to an android_poll_source structure. You + * can call the process() function on it, and fill in android_app->onAppCmd + * and android_app->onInputEvent to be called for your own processing + * of the event. + * + * Alternatively, you can call the low-level functions to read and process + * the data directly... look at the process_cmd() and process_input() + * implementations in the glue to see how to do this. + * + * See the sample named "native-activity" that comes with the NDK with a + * full usage example. Also look at the JavaDoc of NativeActivity. + */ + +struct android_app; + +/** + * Data associated with an ALooper fd that will be returned as the "outData" + * when that source has data ready. + */ +struct android_poll_source { + // The identifier of this source. May be LOOPER_ID_MAIN or + // LOOPER_ID_INPUT. + int32_t id; + + // The android_app this ident is associated with. + struct android_app* app; + + // Function to call to perform the standard processing of data from + // this source. + void (*process)(struct android_app* app, struct android_poll_source* source); +}; + +/** + * This is the interface for the standard glue code of a threaded + * application. In this model, the application's code is running + * in its own thread separate from the main thread of the process. + * It is not required that this thread be associated with the Java + * VM, although it will need to be in order to make JNI calls any + * Java objects. + */ +struct android_app { + // The application can place a pointer to its own state object + // here if it likes. + void* userData; + + // Fill this in with the function to process main app commands (APP_CMD_*) + void (*onAppCmd)(struct android_app* app, int32_t cmd); + + // Fill this in with the function to process input events. At this point + // the event has already been pre-dispatched, and it will be finished upon + // return. Return 1 if you have handled the event, 0 for any default + // dispatching. + int32_t (*onInputEvent)(struct android_app* app, AInputEvent* event); + + // The ANativeActivity object instance that this app is running in. + ANativeActivity* activity; + + // The current configuration the app is running in. + AConfiguration* config; + + // This is the last instance's saved state, as provided at creation time. + // It is NULL if there was no state. You can use this as you need; the + // memory will remain around until you call android_app_exec_cmd() for + // APP_CMD_RESUME, at which point it will be freed and savedState set to NULL. + // These variables should only be changed when processing a APP_CMD_SAVE_STATE, + // at which point they will be initialized to NULL and you can malloc your + // state and place the information here. In that case the memory will be + // freed for you later. + void* savedState; + size_t savedStateSize; + + // The ALooper associated with the app's thread. + ALooper* looper; + + // When non-NULL, this is the input queue from which the app will + // receive user input events. + AInputQueue* inputQueue; + + // When non-NULL, this is the window surface that the app can draw in. + ANativeWindow* window; + + // Current content rectangle of the window; this is the area where the + // window's content should be placed to be seen by the user. + ARect contentRect; + + // Current state of the app's activity. May be either APP_CMD_START, + // APP_CMD_RESUME, APP_CMD_PAUSE, or APP_CMD_STOP; see below. + int activityState; + + // This is non-zero when the application's NativeActivity is being + // destroyed and waiting for the app thread to complete. + int destroyRequested; + + // ------------------------------------------------- + // Below are "private" implementation of the glue code. + + pthread_mutex_t mutex; + pthread_cond_t cond; + + int msgread; + int msgwrite; + + pthread_t thread; + + struct android_poll_source cmdPollSource; + struct android_poll_source inputPollSource; + + int running; + int stateSaved; + int destroyed; + int redrawNeeded; + AInputQueue* pendingInputQueue; + ANativeWindow* pendingWindow; + ARect pendingContentRect; +}; + +enum { + /** + * Looper data ID of commands coming from the app's main thread, which + * is returned as an identifier from ALooper_pollOnce(). The data for this + * identifier is a pointer to an android_poll_source structure. + * These can be retrieved and processed with android_app_read_cmd() + * and android_app_exec_cmd(). + */ + LOOPER_ID_MAIN = 1, + + /** + * Looper data ID of events coming from the AInputQueue of the + * application's window, which is returned as an identifier from + * ALooper_pollOnce(). The data for this identifier is a pointer to an + * android_poll_source structure. These can be read via the inputQueue + * object of android_app. + */ + LOOPER_ID_INPUT = 2, + + /** + * Start of user-defined ALooper identifiers. + */ + LOOPER_ID_USER = 3, +}; + +enum { + /** + * Command from main thread: the AInputQueue has changed. Upon processing + * this command, android_app->inputQueue will be updated to the new queue + * (or NULL). + */ + APP_CMD_INPUT_CHANGED, + + /** + * Command from main thread: a new ANativeWindow is ready for use. Upon + * receiving this command, android_app->window will contain the new window + * surface. + */ + APP_CMD_INIT_WINDOW, + + /** + * Command from main thread: the existing ANativeWindow needs to be + * terminated. Upon receiving this command, android_app->window still + * contains the existing window; after calling android_app_exec_cmd + * it will be set to NULL. + */ + APP_CMD_TERM_WINDOW, + + /** + * Command from main thread: the current ANativeWindow has been resized. + * Please redraw with its new size. + */ + APP_CMD_WINDOW_RESIZED, + + /** + * Command from main thread: the system needs that the current ANativeWindow + * be redrawn. You should redraw the window before handing this to + * android_app_exec_cmd() in order to avoid transient drawing glitches. + */ + APP_CMD_WINDOW_REDRAW_NEEDED, + + /** + * Command from main thread: the content area of the window has changed, + * such as from the soft input window being shown or hidden. You can + * find the new content rect in android_app::contentRect. + */ + APP_CMD_CONTENT_RECT_CHANGED, + + /** + * Command from main thread: the app's activity window has gained + * input focus. + */ + APP_CMD_GAINED_FOCUS, + + /** + * Command from main thread: the app's activity window has lost + * input focus. + */ + APP_CMD_LOST_FOCUS, + + /** + * Command from main thread: the current device configuration has changed. + */ + APP_CMD_CONFIG_CHANGED, + + /** + * Command from main thread: the system is running low on memory. + * Try to reduce your memory use. + */ + APP_CMD_LOW_MEMORY, + + /** + * Command from main thread: the app's activity has been started. + */ + APP_CMD_START, + + /** + * Command from main thread: the app's activity has been resumed. + */ + APP_CMD_RESUME, + + /** + * Command from main thread: the app should generate a new saved state + * for itself, to restore from later if needed. If you have saved state, + * allocate it with malloc and place it in android_app.savedState with + * the size in android_app.savedStateSize. The will be freed for you + * later. + */ + APP_CMD_SAVE_STATE, + + /** + * Command from main thread: the app's activity has been paused. + */ + APP_CMD_PAUSE, + + /** + * Command from main thread: the app's activity has been stopped. + */ + APP_CMD_STOP, + + /** + * Command from main thread: the app's activity is being destroyed, + * and waiting for the app thread to clean up and exit before proceeding. + */ + APP_CMD_DESTROY, +}; + +/** + * Call when ALooper_pollAll() returns LOOPER_ID_MAIN, reading the next + * app command message. + */ +int8_t android_app_read_cmd(struct android_app* android_app); + +/** + * Call with the command returned by android_app_read_cmd() to do the + * initial pre-processing of the given command. You can perform your own + * actions for the command after calling this function. + */ +void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd); + +/** + * Call with the command returned by android_app_read_cmd() to do the + * final post-processing of the given command. You must have done your own + * actions for the command before calling this function. + */ +void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd); + +/** + * Dummy function that used to be used to prevent the linker from stripping app + * glue code. No longer necessary, since __attribute__((visibility("default"))) + * does this for us. + */ +__attribute__(( + deprecated("Calls to app_dummy are no longer necessary. See " + "https://github.com/android-ndk/ndk/issues/381."))) void +app_dummy(); + +/** + * This is the function that application code must implement, representing + * the main entry to the app. + */ +extern void android_main(struct android_app* app); + +#ifdef __cplusplus +} +#endif + +#endif /* _ANDROID_NATIVE_APP_GLUE_H */ + + +#endif // FL_WINAPI_SCREEN_DRIVER_H + +// +// End of "$Id: Fl_Android_Screen_Driver.H 12655 2018-02-09 14:39:42Z AlbrechtS $". +// |