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- /*
- Copyright (C) 2014 sapier
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
- #include "touchscreengui.h"
- #include "irrlichttypes.h"
- #include "irr_v2d.h"
- #include "log.h"
- #include "keycode.h"
- #include "settings.h"
- #include "gettime.h"
- #include "util/numeric.h"
- #include "porting.h"
- #include <iostream>
- #include <algorithm>
- #include <ISceneCollisionManager.h>
- using namespace irr::core;
- extern Settings *g_settings;
- const char** touchgui_button_imagenames = (const char*[]) {
- "up_arrow.png",
- "down_arrow.png",
- "left_arrow.png",
- "right_arrow.png",
- "jump_btn.png",
- "down.png",
- "inventory_btn.png",
- "chat_btn.png"
- };
- static irr::EKEY_CODE id2keycode(touch_gui_button_id id)
- {
- std::string key = "";
- switch (id) {
- case forward_id:
- key = "forward";
- break;
- case left_id:
- key = "left";
- break;
- case right_id:
- key = "right";
- break;
- case backward_id:
- key = "backward";
- break;
- case jump_id:
- key = "jump";
- break;
- case inventory_id:
- key = "inventory";
- break;
- case chat_id:
- key = "chat";
- break;
- case crunch_id:
- key = "sneak";
- break;
- }
- assert(key != "");
- return keyname_to_keycode(g_settings->get("keymap_" + key).c_str());
- }
- TouchScreenGUI *g_touchscreengui;
- TouchScreenGUI::TouchScreenGUI(IrrlichtDevice *device, IEventReceiver* receiver):
- m_device(device),
- m_guienv(device->getGUIEnvironment()),
- m_camera_yaw(0.0),
- m_camera_pitch(0.0),
- m_visible(false),
- m_move_id(-1),
- m_receiver(receiver)
- {
- for (unsigned int i=0; i < after_last_element_id; i++) {
- m_buttons[i].guibutton = 0;
- m_buttons[i].repeatcounter = -1;
- }
- m_screensize = m_device->getVideoDriver()->getScreenSize();
- }
- void TouchScreenGUI::loadButtonTexture(button_info* btn, const char* path)
- {
- unsigned int tid;
- video::ITexture *texture = m_texturesource->getTexture(path,&tid);
- if (texture) {
- btn->guibutton->setUseAlphaChannel(true);
- btn->guibutton->setImage(texture);
- btn->guibutton->setPressedImage(texture);
- btn->guibutton->setScaleImage(true);
- btn->guibutton->setDrawBorder(false);
- btn->guibutton->setText(L"");
- }
- }
- void TouchScreenGUI::initButton(touch_gui_button_id id, rect<s32> button_rect,
- std::wstring caption, bool immediate_release )
- {
- button_info* btn = &m_buttons[id];
- btn->guibutton = m_guienv->addButton(button_rect, 0, id, caption.c_str());
- btn->guibutton->grab();
- btn->repeatcounter = -1;
- btn->keycode = id2keycode(id);
- btn->immediate_release = immediate_release;
- btn->ids.clear();
- loadButtonTexture(btn,touchgui_button_imagenames[id]);
- }
- static int getMaxControlPadSize(float density) {
- return 200 * density * g_settings->getFloat("gui_scaling");
- }
- void TouchScreenGUI::init(ISimpleTextureSource* tsrc, float density)
- {
- assert(tsrc != 0);
- u32 control_pad_size =
- MYMIN((2 * m_screensize.Y) / 3,getMaxControlPadSize(density));
- u32 button_size = control_pad_size / 3;
- m_visible = true;
- m_texturesource = tsrc;
- m_control_pad_rect = rect<s32>(0, m_screensize.Y - 3 * button_size,
- 3 * button_size, m_screensize.Y);
- /*
- draw control pad
- 0 1 2
- 3 4 5
- for now only 0, 1, 2, and 4 are used
- */
- int number = 0;
- for (int y = 0; y < 2; ++y)
- for (int x = 0; x < 3; ++x, ++number) {
- rect<s32> button_rect(
- x * button_size, m_screensize.Y - button_size * (2 - y),
- (x + 1) * button_size, m_screensize.Y - button_size * (1 - y)
- );
- touch_gui_button_id id = after_last_element_id;
- std::wstring caption;
- switch (number) {
- case 0:
- id = left_id;
- caption = L"<";
- break;
- case 1:
- id = forward_id;
- caption = L"^";
- break;
- case 2:
- id = right_id;
- caption = L">";
- break;
- case 4:
- id = backward_id;
- caption = L"v";
- break;
- }
- if (id != after_last_element_id) {
- initButton(id, button_rect, caption, false);
- }
- }
- /* init inventory button */
- initButton(inventory_id,
- rect<s32>(0, m_screensize.Y - (button_size/2),
- (button_size/2), m_screensize.Y), L"inv", true);
- /* init jump button */
- initButton(jump_id,
- rect<s32>(m_screensize.X-(1.75*button_size),
- m_screensize.Y - (0.5*button_size),
- m_screensize.X-(0.25*button_size),
- m_screensize.Y),
- L"x",false);
- /* init crunch button */
- initButton(crunch_id,
- rect<s32>(m_screensize.X-(3.25*button_size),
- m_screensize.Y - (0.5*button_size),
- m_screensize.X-(1.75*button_size),
- m_screensize.Y),
- L"H",false);
- /* init chat button */
- initButton(chat_id,
- rect<s32>(m_screensize.X-(1.5*button_size), 0,
- m_screensize.X, button_size),
- L"Chat", true);
- }
- touch_gui_button_id TouchScreenGUI::getButtonID(s32 x, s32 y)
- {
- IGUIElement* rootguielement = m_guienv->getRootGUIElement();
- if (rootguielement != NULL) {
- gui::IGUIElement *element =
- rootguielement->getElementFromPoint(core::position2d<s32>(x,y));
- if (element) {
- for (unsigned int i=0; i < after_last_element_id; i++) {
- if (element == m_buttons[i].guibutton) {
- return (touch_gui_button_id) i;
- }
- }
- }
- }
- return after_last_element_id;
- }
- touch_gui_button_id TouchScreenGUI::getButtonID(int eventID)
- {
- for (unsigned int i=0; i < after_last_element_id; i++) {
- button_info* btn = &m_buttons[i];
- std::vector<int>::iterator id =
- std::find(btn->ids.begin(),btn->ids.end(), eventID);
- if (id != btn->ids.end())
- return (touch_gui_button_id) i;
- }
- return after_last_element_id;
- }
- bool TouchScreenGUI::isHUDButton(const SEvent &event)
- {
- // check if hud item is pressed
- for (std::map<int,rect<s32> >::iterator iter = m_hud_rects.begin();
- iter != m_hud_rects.end(); iter++) {
- if (iter->second.isPointInside(
- v2s32(event.TouchInput.X,
- event.TouchInput.Y)
- )) {
- if ( iter->first < 8) {
- SEvent* translated = new SEvent();
- memset(translated,0,sizeof(SEvent));
- translated->EventType = irr::EET_KEY_INPUT_EVENT;
- translated->KeyInput.Key = (irr::EKEY_CODE) (KEY_KEY_1 + iter->first);
- translated->KeyInput.Control = false;
- translated->KeyInput.Shift = false;
- translated->KeyInput.PressedDown = true;
- m_receiver->OnEvent(*translated);
- m_hud_ids[event.TouchInput.ID] = translated->KeyInput.Key;
- delete translated;
- return true;
- }
- }
- }
- return false;
- }
- bool TouchScreenGUI::isReleaseHUDButton(int eventID)
- {
- std::map<int,irr::EKEY_CODE>::iterator iter = m_hud_ids.find(eventID);
- if (iter != m_hud_ids.end()) {
- SEvent* translated = new SEvent();
- memset(translated,0,sizeof(SEvent));
- translated->EventType = irr::EET_KEY_INPUT_EVENT;
- translated->KeyInput.Key = iter->second;
- translated->KeyInput.PressedDown = false;
- translated->KeyInput.Control = false;
- translated->KeyInput.Shift = false;
- m_receiver->OnEvent(*translated);
- m_hud_ids.erase(iter);
- delete translated;
- return true;
- }
- return false;
- }
- void TouchScreenGUI::ButtonEvent(touch_gui_button_id button,
- int eventID, bool action)
- {
- button_info* btn = &m_buttons[button];
- SEvent* translated = new SEvent();
- memset(translated,0,sizeof(SEvent));
- translated->EventType = irr::EET_KEY_INPUT_EVENT;
- translated->KeyInput.Key = btn->keycode;
- translated->KeyInput.Control = false;
- translated->KeyInput.Shift = false;
- translated->KeyInput.Char = 0;
- /* add this event */
- if (action) {
- assert(std::find(btn->ids.begin(),btn->ids.end(), eventID) == btn->ids.end());
- btn->ids.push_back(eventID);
- if (btn->ids.size() > 1) return;
- btn->repeatcounter = 0;
- translated->KeyInput.PressedDown = true;
- translated->KeyInput.Key = btn->keycode;
- m_receiver->OnEvent(*translated);
- }
- /* remove event */
- if ((!action) || (btn->immediate_release)) {
- std::vector<int>::iterator pos =
- std::find(btn->ids.begin(),btn->ids.end(), eventID);
- /* has to be in touch list */
- assert(pos != btn->ids.end());
- btn->ids.erase(pos);
- if (btn->ids.size() > 0) { return; }
- translated->KeyInput.PressedDown = false;
- btn->repeatcounter = -1;
- m_receiver->OnEvent(*translated);
- }
- delete translated;
- }
- void TouchScreenGUI::translateEvent(const SEvent &event)
- {
- if (!m_visible) {
- infostream << "TouchScreenGUI::translateEvent got event but not visible?!" << std::endl;
- return;
- }
- if (event.EventType != EET_TOUCH_INPUT_EVENT) {
- return;
- }
- if (event.TouchInput.Event == ETIE_PRESSED_DOWN) {
- /* add to own copy of eventlist ...
- * android would provide this information but irrlicht guys don't
- * wanna design a efficient interface
- */
- id_status toadd;
- toadd.id = event.TouchInput.ID;
- toadd.X = event.TouchInput.X;
- toadd.Y = event.TouchInput.Y;
- m_known_ids.push_back(toadd);
- int eventID = event.TouchInput.ID;
- touch_gui_button_id button =
- getButtonID(event.TouchInput.X, event.TouchInput.Y);
- /* handle button events */
- if (button != after_last_element_id) {
- ButtonEvent(button,eventID,true);
- }
- else if (isHUDButton(event))
- {
- /* already handled in isHUDButton() */
- }
- /* handle non button events */
- else {
- /* if we don't already have a moving point make this the moving one */
- if (m_move_id == -1) {
- m_move_id = event.TouchInput.ID;
- m_move_has_really_moved = false;
- m_move_downtime = getTimeMs();
- m_move_downlocation = v2s32(event.TouchInput.X, event.TouchInput.Y);
- m_move_sent_as_mouse_event = false;
- }
- }
- m_pointerpos[event.TouchInput.ID] = v2s32(event.TouchInput.X, event.TouchInput.Y);
- }
- else if (event.TouchInput.Event == ETIE_LEFT_UP) {
- verbosestream << "Up event for pointerid: " << event.TouchInput.ID << std::endl;
- touch_gui_button_id button = getButtonID(event.TouchInput.ID);
- /* handle button events */
- if (button != after_last_element_id) {
- ButtonEvent(button,event.TouchInput.ID,false);
- }
- /* handle hud button events */
- else if (isReleaseHUDButton(event.TouchInput.ID)) {
- /* nothing to do here */
- }
- /* handle the point used for moving view */
- else if (event.TouchInput.ID == m_move_id) {
- m_move_id = -1;
- /* if this pointer issued a mouse event issue symmetric release here */
- if (m_move_sent_as_mouse_event) {
- SEvent* translated = new SEvent;
- memset(translated,0,sizeof(SEvent));
- translated->EventType = EET_MOUSE_INPUT_EVENT;
- translated->MouseInput.X = m_move_downlocation.X;
- translated->MouseInput.Y = m_move_downlocation.Y;
- translated->MouseInput.Shift = false;
- translated->MouseInput.Control = false;
- translated->MouseInput.ButtonStates = 0;
- translated->MouseInput.Event = EMIE_LMOUSE_LEFT_UP;
- m_receiver->OnEvent(*translated);
- delete translated;
- }
- else {
- /* do double tap detection */
- doubleTapDetection();
- }
- }
- else {
- infostream
- << "TouchScreenGUI::translateEvent released unknown button: "
- << event.TouchInput.ID << std::endl;
- }
- for (std::vector<id_status>::iterator iter = m_known_ids.begin();
- iter != m_known_ids.end(); iter++) {
- if (iter->id == event.TouchInput.ID) {
- m_known_ids.erase(iter);
- break;
- }
- }
- }
- else {
- assert(event.TouchInput.Event == ETIE_MOVED);
- int move_idx = event.TouchInput.ID;
- if (m_pointerpos[event.TouchInput.ID] ==
- v2s32(event.TouchInput.X, event.TouchInput.Y)) {
- return;
- }
- if (m_move_id != -1) {
- if ((event.TouchInput.ID == m_move_id) &&
- (!m_move_sent_as_mouse_event)) {
- double distance = sqrt(
- (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) *
- (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) +
- (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y) *
- (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y));
- if ((distance > g_settings->getU16("touchscreen_threshold")) ||
- (m_move_has_really_moved)) {
- m_move_has_really_moved = true;
- s32 X = event.TouchInput.X;
- s32 Y = event.TouchInput.Y;
- // update camera_yaw and camera_pitch
- s32 dx = X - m_pointerpos[event.TouchInput.ID].X;
- s32 dy = Y - m_pointerpos[event.TouchInput.ID].Y;
- /* adapt to similar behaviour as pc screen */
- double d = g_settings->getFloat("mouse_sensitivity") *4;
- double old_yaw = m_camera_yaw;
- double old_pitch = m_camera_pitch;
- m_camera_yaw -= dx * d;
- m_camera_pitch = MYMIN(MYMAX( m_camera_pitch + (dy * d),-180),180);
- while (m_camera_yaw < 0)
- m_camera_yaw += 360;
- while (m_camera_yaw > 360)
- m_camera_yaw -= 360;
- // update shootline
- m_shootline = m_device
- ->getSceneManager()
- ->getSceneCollisionManager()
- ->getRayFromScreenCoordinates(v2s32(X, Y));
- m_pointerpos[event.TouchInput.ID] = v2s32(X, Y);
- }
- }
- else if ((event.TouchInput.ID == m_move_id) &&
- (m_move_sent_as_mouse_event)) {
- m_shootline = m_device
- ->getSceneManager()
- ->getSceneCollisionManager()
- ->getRayFromScreenCoordinates(
- v2s32(event.TouchInput.X,event.TouchInput.Y));
- }
- }
- else {
- handleChangedButton(event);
- }
- }
- }
- void TouchScreenGUI::handleChangedButton(const SEvent &event)
- {
- for (unsigned int i = 0; i < after_last_element_id; i++) {
- if (m_buttons[i].ids.empty()) {
- continue;
- }
- for(std::vector<int>::iterator iter = m_buttons[i].ids.begin();
- iter != m_buttons[i].ids.end(); iter++) {
- if (event.TouchInput.ID == *iter) {
- int current_button_id =
- getButtonID(event.TouchInput.X, event.TouchInput.Y);
- if (current_button_id == i) {
- continue;
- }
- /* remove old button */
- ButtonEvent((touch_gui_button_id) i,*iter,false);
- if (current_button_id == after_last_element_id) {
- return;
- }
- ButtonEvent((touch_gui_button_id) current_button_id,*iter,true);
- return;
- }
- }
- }
- int current_button_id = getButtonID(event.TouchInput.X, event.TouchInput.Y);
- if (current_button_id == after_last_element_id) {
- return;
- }
- button_info* btn = &m_buttons[current_button_id];
- if (std::find(btn->ids.begin(),btn->ids.end(), event.TouchInput.ID) == btn->ids.end()) {
- ButtonEvent((touch_gui_button_id) current_button_id,event.TouchInput.ID,true);
- }
- }
- bool TouchScreenGUI::doubleTapDetection()
- {
- m_key_events[0].down_time = m_key_events[1].down_time;
- m_key_events[0].x = m_key_events[1].x;
- m_key_events[0].y = m_key_events[1].y;
- m_key_events[1].down_time = m_move_downtime;
- m_key_events[1].x = m_move_downlocation.X;
- m_key_events[1].y = m_move_downlocation.Y;
- u32 delta = porting::getDeltaMs(m_key_events[0].down_time,getTimeMs());
- if (delta > 400)
- return false;
- double distance = sqrt(
- (m_key_events[0].x - m_key_events[1].x) * (m_key_events[0].x - m_key_events[1].x) +
- (m_key_events[0].y - m_key_events[1].y) * (m_key_events[0].y - m_key_events[1].y));
- if (distance >(20 + g_settings->getU16("touchscreen_threshold")))
- return false;
- SEvent* translated = new SEvent();
- memset(translated,0,sizeof(SEvent));
- translated->EventType = EET_MOUSE_INPUT_EVENT;
- translated->MouseInput.X = m_key_events[0].x;
- translated->MouseInput.Y = m_key_events[0].y;
- translated->MouseInput.Shift = false;
- translated->MouseInput.Control = false;
- translated->MouseInput.ButtonStates = EMBSM_RIGHT;
- // update shootline
- m_shootline = m_device
- ->getSceneManager()
- ->getSceneCollisionManager()
- ->getRayFromScreenCoordinates(v2s32(m_key_events[0].x, m_key_events[0].y));
- translated->MouseInput.Event = EMIE_RMOUSE_PRESSED_DOWN;
- verbosestream << "TouchScreenGUI::translateEvent right click press" << std::endl;
- m_receiver->OnEvent(*translated);
- translated->MouseInput.ButtonStates = 0;
- translated->MouseInput.Event = EMIE_RMOUSE_LEFT_UP;
- verbosestream << "TouchScreenGUI::translateEvent right click release" << std::endl;
- m_receiver->OnEvent(*translated);
- delete translated;
- return true;
- }
- TouchScreenGUI::~TouchScreenGUI()
- {
- for (unsigned int i=0; i < after_last_element_id; i++) {
- button_info* btn = &m_buttons[i];
- if (btn->guibutton != 0) {
- btn->guibutton->drop();
- btn->guibutton = NULL;
- }
- }
- }
- void TouchScreenGUI::step(float dtime)
- {
- /* simulate keyboard repeats */
- for (unsigned int i=0; i < after_last_element_id; i++) {
- button_info* btn = &m_buttons[i];
- if (btn->ids.size() > 0) {
- btn->repeatcounter += dtime;
- if (btn->repeatcounter < 0.2) continue;
- btn->repeatcounter = 0;
- SEvent translated;
- memset(&translated,0,sizeof(SEvent));
- translated.EventType = irr::EET_KEY_INPUT_EVENT;
- translated.KeyInput.Key = btn->keycode;
- translated.KeyInput.PressedDown = false;
- m_receiver->OnEvent(translated);
- translated.KeyInput.PressedDown = true;
- m_receiver->OnEvent(translated);
- }
- }
- /* if a new placed pointer isn't moved for some time start digging */
- if ((m_move_id != -1) &&
- (!m_move_has_really_moved) &&
- (!m_move_sent_as_mouse_event)) {
- u32 delta = porting::getDeltaMs(m_move_downtime,getTimeMs());
- if (delta > MIN_DIG_TIME_MS) {
- m_shootline = m_device
- ->getSceneManager()
- ->getSceneCollisionManager()
- ->getRayFromScreenCoordinates(
- v2s32(m_move_downlocation.X,m_move_downlocation.Y));
- SEvent translated;
- memset(&translated,0,sizeof(SEvent));
- translated.EventType = EET_MOUSE_INPUT_EVENT;
- translated.MouseInput.X = m_move_downlocation.X;
- translated.MouseInput.Y = m_move_downlocation.Y;
- translated.MouseInput.Shift = false;
- translated.MouseInput.Control = false;
- translated.MouseInput.ButtonStates = EMBSM_LEFT;
- translated.MouseInput.Event = EMIE_LMOUSE_PRESSED_DOWN;
- verbosestream << "TouchScreenGUI::step left click press" << std::endl;
- m_receiver->OnEvent(translated);
- m_move_sent_as_mouse_event = true;
- }
- }
- }
- void TouchScreenGUI::resetHud()
- {
- m_hud_rects.clear();
- }
- void TouchScreenGUI::registerHudItem(int index, const rect<s32> &rect)
- {
- m_hud_rects[index] = rect;
- }
- void TouchScreenGUI::Toggle(bool visible)
- {
- m_visible = visible;
- for (unsigned int i=0; i < after_last_element_id; i++) {
- button_info* btn = &m_buttons[i];
- if (btn->guibutton != 0) {
- btn->guibutton->setVisible(visible);
- }
- }
- }
- void TouchScreenGUI::Hide()
- {
- Toggle(false);
- }
- void TouchScreenGUI::Show()
- {
- Toggle(true);
- }
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