*initHEADmaster

1 files changed, 321 insertions, 0 deletions

diff --git a/source/3rd-party/SDL2/src/video/mir/SDL_mirevents.c b/source/3rd-party/SDL2/src/video/mir/SDL_mirevents.c
new file mode 100644
index 0000000..df92799
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/mir/SDL_mirevents.c
@@ -0,0 +1,321 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/*
+  Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com>
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_MIR
+
+#include "../../events/SDL_events_c.h"
+#include "../../events/SDL_keyboard_c.h"
+#include "../../events/SDL_touch_c.h"
+#include "../../events/scancodes_xfree86.h"
+
+#include "SDL_mirevents.h"
+#include "SDL_mirwindow.h"
+
+#include <xkbcommon/xkbcommon.h>
+
+#include "SDL_mirdyn.h"
+
+static void
+HandleKeyText(int32_t key_code)
+{
+    char text[8];
+    int size = 0;
+
+    size = MIR_xkb_keysym_to_utf8(key_code, text, sizeof text);
+
+    if (size > 0) {
+        text[size] = '\0';
+        SDL_SendKeyboardText(text);
+    }
+}
+
+/* FIXME
+   Mir still needs to implement its IM API, for now we assume
+   a single key press produces a character.
+*/
+static void
+HandleKeyEvent(MirKeyboardEvent const* key_event, SDL_Window* window)
+{
+    xkb_keysym_t key_code;
+    Uint8 key_state;
+    int event_scancode;
+    uint32_t sdl_scancode = SDL_SCANCODE_UNKNOWN;
+
+    MirKeyboardAction action = MIR_mir_keyboard_event_action(key_event);
+
+    key_state      = SDL_PRESSED;
+    key_code       = MIR_mir_keyboard_event_key_code(key_event);
+    event_scancode = MIR_mir_keyboard_event_scan_code(key_event);
+
+    if (action == mir_keyboard_action_up)
+        key_state = SDL_RELEASED;
+
+    if (event_scancode < SDL_arraysize(xfree86_scancode_table2))
+        sdl_scancode = xfree86_scancode_table2[event_scancode];
+
+    if (sdl_scancode != SDL_SCANCODE_UNKNOWN)
+        SDL_SendKeyboardKey(key_state, sdl_scancode);
+
+    if (key_state == SDL_PRESSED)
+        HandleKeyText(key_code);
+}
+
+static void
+HandleMouseButton(SDL_Window* sdl_window, Uint8 state, MirPointerEvent const* pointer)
+{
+    uint32_t sdl_button           = SDL_BUTTON_LEFT;
+    MirPointerButton button_state = mir_pointer_button_primary;
+
+    static uint32_t old_button_states = 0;
+    uint32_t new_button_states = MIR_mir_pointer_event_buttons(pointer);
+
+    // XOR on our old button states vs our new states to get the newley pressed/released button
+    button_state = new_button_states ^ old_button_states;
+
+    switch (button_state) {
+        case mir_pointer_button_primary:
+            sdl_button = SDL_BUTTON_LEFT;
+            break;
+        case mir_pointer_button_secondary:
+            sdl_button = SDL_BUTTON_RIGHT;
+            break;
+        case mir_pointer_button_tertiary:
+            sdl_button = SDL_BUTTON_MIDDLE;
+            break;
+        case mir_pointer_button_forward:
+            sdl_button = SDL_BUTTON_X1;
+            break;
+        case mir_pointer_button_back:
+            sdl_button = SDL_BUTTON_X2;
+            break;
+        default:
+            break;
+    }
+
+    old_button_states = new_button_states;
+
+    SDL_SendMouseButton(sdl_window, 0, state, sdl_button);
+}
+
+static void
+HandleMouseMotion(SDL_Window* sdl_window, int x, int y)
+{
+    SDL_Mouse* mouse = SDL_GetMouse();
+    SDL_SendMouseMotion(sdl_window, 0, mouse->relative_mode, x, y);
+}
+
+static void
+HandleTouchPress(int device_id, int source_id, SDL_bool down, float x, float y, float pressure)
+{
+    SDL_SendTouch(device_id, source_id, down, x, y, pressure);
+}
+
+static void
+HandleTouchMotion(int device_id, int source_id, float x, float y, float pressure)
+{
+    SDL_SendTouchMotion(device_id, source_id, x, y, pressure);
+}
+
+static void
+HandleMouseScroll(SDL_Window* sdl_window, float hscroll, float vscroll)
+{
+    SDL_SendMouseWheel(sdl_window, 0, hscroll, vscroll, SDL_MOUSEWHEEL_NORMAL);
+}
+
+static void
+AddTouchDevice(int device_id)
+{
+    if (SDL_AddTouch(device_id, "") < 0)
+        SDL_SetError("Error: can't add touch %s, %d", __FILE__, __LINE__);
+}
+
+static void
+HandleTouchEvent(MirTouchEvent const* touch, int device_id, SDL_Window* sdl_window)
+{
+    int i, point_count;
+    point_count = MIR_mir_touch_event_point_count(touch);
+
+    AddTouchDevice(device_id);
+
+    for (i = 0; i < point_count; i++) {
+        int id = MIR_mir_touch_event_id(touch, i);
+
+        int width  = sdl_window->w;
+        int height = sdl_window->h;
+
+        float x = MIR_mir_touch_event_axis_value(touch, i, mir_touch_axis_x);
+        float y = MIR_mir_touch_event_axis_value(touch, i, mir_touch_axis_y);
+
+        float n_x = x / width;
+        float n_y = y / height;
+
+        float pressure = MIR_mir_touch_event_axis_value(touch, i, mir_touch_axis_pressure);
+
+        switch (MIR_mir_touch_event_action(touch, i)) {
+            case mir_touch_action_up:
+                HandleTouchPress(device_id, id, SDL_FALSE, n_x, n_y, pressure);
+                break;
+            case mir_touch_action_down:
+                HandleTouchPress(device_id, id, SDL_TRUE, n_x, n_y, pressure);
+                break;
+            case mir_touch_action_change:
+                HandleTouchMotion(device_id, id, n_x, n_y, pressure);
+                break;
+            case mir_touch_actions:
+                break;
+        }
+    }
+}
+
+static void
+HandleMouseEvent(MirPointerEvent const* pointer, SDL_Window* sdl_window)
+{
+    SDL_SetMouseFocus(sdl_window);
+
+    switch (MIR_mir_pointer_event_action(pointer)) {
+        case mir_pointer_action_button_down:
+            HandleMouseButton(sdl_window, SDL_PRESSED, pointer);
+            break;
+        case mir_pointer_action_button_up:
+            HandleMouseButton(sdl_window, SDL_RELEASED, pointer);
+            break;
+        case mir_pointer_action_motion: {
+            int x, y;
+            float hscroll, vscroll;
+            SDL_Mouse* mouse = SDL_GetMouse();
+            x = MIR_mir_pointer_event_axis_value(pointer, mir_pointer_axis_x);
+            y = MIR_mir_pointer_event_axis_value(pointer, mir_pointer_axis_y);
+
+            if (mouse) {
+                if (mouse->relative_mode) {
+                    int relative_x = MIR_mir_pointer_event_axis_value(pointer, mir_pointer_axis_relative_x);
+                    int relative_y = MIR_mir_pointer_event_axis_value(pointer, mir_pointer_axis_relative_y);
+                    HandleMouseMotion(sdl_window, relative_x, relative_y);
+                }
+                else if (mouse->x != x || mouse->y != y) {
+                    HandleMouseMotion(sdl_window, x, y);
+                }
+            }
+
+            hscroll = MIR_mir_pointer_event_axis_value(pointer, mir_pointer_axis_hscroll);
+            vscroll = MIR_mir_pointer_event_axis_value(pointer, mir_pointer_axis_vscroll);
+            if (vscroll != 0 || hscroll != 0)
+                HandleMouseScroll(sdl_window, hscroll, vscroll);
+        }
+            break;
+        case mir_pointer_action_leave:
+            SDL_SetMouseFocus(NULL);
+            break;
+        case mir_pointer_action_enter:
+        default:
+            break;
+    }
+}
+
+static void
+HandleInput(MirInputEvent const* input_event, SDL_Window* window)
+{
+    switch (MIR_mir_input_event_get_type(input_event)) {
+        case (mir_input_event_type_key):
+            HandleKeyEvent(MIR_mir_input_event_get_keyboard_event(input_event), window);
+            break;
+        case (mir_input_event_type_pointer):
+            HandleMouseEvent(MIR_mir_input_event_get_pointer_event(input_event), window);
+            break;
+        case (mir_input_event_type_touch):
+            HandleTouchEvent(MIR_mir_input_event_get_touch_event(input_event),
+                             MIR_mir_input_event_get_device_id(input_event),
+                             window);
+            break;
+        default:
+            break;
+    }
+}
+
+static void
+HandleResize(MirResizeEvent const* resize_event, SDL_Window* window)
+{
+    int new_w = MIR_mir_resize_event_get_width (resize_event);
+    int new_h = MIR_mir_resize_event_get_height(resize_event);
+
+    int old_w = window->w;
+    int old_h = window->h;
+
+    if (new_w != old_w || new_h != old_h)
+        SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, new_w, new_h);
+}
+
+static void
+HandleWindow(MirWindowEvent const* event, SDL_Window* window)
+{
+    MirWindowAttrib attrib = MIR_mir_window_event_get_attribute(event);
+    int value              = MIR_mir_window_event_get_attribute_value(event);
+
+    if (attrib == mir_window_attrib_focus) {
+        if (value == mir_window_focus_state_focused) {
+            SDL_SetKeyboardFocus(window);
+        }
+        else if (value == mir_window_focus_state_unfocused) {
+            SDL_SetKeyboardFocus(NULL);
+        }
+    }
+}
+
+static void
+MIR_HandleClose(SDL_Window* window) {
+    SDL_SendWindowEvent(window, SDL_WINDOWEVENT_CLOSE, 0, 0);
+}
+
+void
+MIR_HandleEvent(MirWindow* mirwindow, MirEvent const* ev, void* context)
+{
+    MirEventType event_type = MIR_mir_event_get_type(ev);
+    SDL_Window* window      = (SDL_Window*)context;
+
+    if (window) {
+        switch (event_type) {
+            case (mir_event_type_input):
+                HandleInput(MIR_mir_event_get_input_event(ev), window);
+                break;
+            case (mir_event_type_resize):
+                HandleResize(MIR_mir_event_get_resize_event(ev), window);
+                break;
+            case (mir_event_type_window):
+                HandleWindow(MIR_mir_event_get_window_event(ev), window);
+                break;
+            case (mir_event_type_close_window):
+                MIR_HandleClose(window);
+                break;
+            default:
+                break;
+        }
+    }
+}
+
+#endif /* SDL_VIDEO_DRIVER_MIR */
+
+/* vi: set ts=4 sw=4 expandtab: */