obs-studio-ftl/UI/window-basic-interaction.cpp at develop · mixer/obs-studio-ftl · GitHub

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/******************************************************************************

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 2 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 General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.

******************************************************************************/

#include "obs-app.hpp"

#include "window-basic-interaction.hpp"

#include "window-basic-main.hpp"

#include "qt-wrappers.hpp"

#include "display-helpers.hpp"

#include <QKeyEvent>

#include <QCloseEvent>

#include <QScreen>

#include <QWindow>

using namespace std;

OBSBasicInteraction::OBSBasicInteraction(QWidget *parent, OBSSource source_)

: QDialog (parent),

main (qobject_cast<OBSBasic*>(parent)),

ui (new Ui::OBSBasicInteraction),

source (source_),

removedSignal (obs_source_get_signal_handler(source), "remove",

OBSBasicInteraction::SourceRemoved, this),

renamedSignal (obs_source_get_signal_handler(source), "rename",

OBSBasicInteraction::SourceRenamed, this),

eventFilter (BuildEventFilter())

{

int cx = (int)config_get_int(App()->GlobalConfig(), "InteractionWindow",

"cx");

int cy = (int)config_get_int(App()->GlobalConfig(), "InteractionWindow",

"cy");

ui->setupUi(this);

ui->preview->setMouseTracking(true);

ui->preview->setFocusPolicy(Qt::StrongFocus);

ui->preview->installEventFilter(eventFilter.get());

if (cx > 400 && cy > 400)

resize(cx, cy);

OBSData settings = obs_source_get_settings(source);

obs_data_release(settings);

const char *name = obs_source_get_name(source);

setWindowTitle(QTStr("Basic.InteractionWindow").arg(QT_UTF8(name)));

auto addDrawCallback = [this] ()

{

obs_display_add_draw_callback(ui->preview->GetDisplay(),

OBSBasicInteraction::DrawPreview, this);

};

connect(ui->preview, &OBSQTDisplay::DisplayCreated, addDrawCallback);

}

OBSBasicInteraction::~OBSBasicInteraction()

{

// since QT fakes a mouse movement while destructing a widget

// remove our event filter

ui->preview->removeEventFilter(eventFilter.get());

}

OBSEventFilter *OBSBasicInteraction::BuildEventFilter()

{

return new OBSEventFilter(

[this](QObject *obj, QEvent *event)

{

UNUSED_PARAMETER(obj);

switch(event->type()) {

case QEvent::MouseButtonPress:

case QEvent::MouseButtonRelease:

case QEvent::MouseButtonDblClick:

return this->HandleMouseClickEvent(

static_cast<QMouseEvent *>(event));

case QEvent::MouseMove:

case QEvent::Enter:

case QEvent::Leave:

return this->HandleMouseMoveEvent(

static_cast<QMouseEvent *>(event));

case QEvent::Wheel:

return this->HandleMouseWheelEvent(

static_cast<QWheelEvent *>(event));

case QEvent::FocusIn:

case QEvent::FocusOut:

return this->HandleFocusEvent(

static_cast<QFocusEvent *>(event));

case QEvent::KeyPress:

case QEvent::KeyRelease:

return this->HandleKeyEvent(

static_cast<QKeyEvent *>(event));

default:

return false;

}

});

}

void OBSBasicInteraction::SourceRemoved(void *data, calldata_t *params)

{

QMetaObject::invokeMethod(static_cast<OBSBasicInteraction*>(data),

"close");

UNUSED_PARAMETER(params);

}

void OBSBasicInteraction::SourceRenamed(void *data, calldata_t *params)

{

const char *name = calldata_string(params, "new_name");

QString title = QTStr("Basic.InteractionWindow").arg(QT_UTF8(name));

QMetaObject::invokeMethod(static_cast<OBSBasicProperties*>(data),

"setWindowTitle", Q_ARG(QString, title));

}

void OBSBasicInteraction::DrawPreview(void *data, uint32_t cx, uint32_t cy)

{

OBSBasicInteraction *window = static_cast<OBSBasicInteraction*>(data);

if (!window->source)

return;

uint32_t sourceCX = max(obs_source_get_width(window->source), 1u);

uint32_t sourceCY = max(obs_source_get_height(window->source), 1u);

int x, y;

int newCX, newCY;

float scale;

GetScaleAndCenterPos(sourceCX, sourceCY, cx, cy, x, y, scale);

newCX = int(scale * float(sourceCX));

newCY = int(scale * float(sourceCY));

gs_viewport_push();

gs_projection_push();

gs_ortho(0.0f, float(sourceCX), 0.0f, float(sourceCY),

-100.0f, 100.0f);

gs_set_viewport(x, y, newCX, newCY);

obs_source_video_render(window->source);

gs_projection_pop();

gs_viewport_pop();

}

void OBSBasicInteraction::closeEvent(QCloseEvent *event)

{

QDialog::closeEvent(event);

if (!event->isAccepted())

return;

config_set_int(App()->GlobalConfig(), "InteractionWindow", "cx",

width());

config_set_int(App()->GlobalConfig(), "InteractionWindow", "cy",

height());

obs_display_remove_draw_callback(ui->preview->GetDisplay(),

OBSBasicInteraction::DrawPreview, this);

}

static int TranslateQtKeyboardEventModifiers(QInputEvent *event, bool mouseEvent) {

int obsModifiers = INTERACT_NONE;

if (event->modifiers().testFlag(Qt::ShiftModifier))

obsModifiers |= INTERACT_SHIFT_KEY;

if (event->modifiers().testFlag(Qt::AltModifier))

obsModifiers |= INTERACT_ALT_KEY;

#ifdef __APPLE__

// Mac: Meta = Control, Control = Command

if (event->modifiers().testFlag(Qt::ControlModifier))

obsModifiers |= INTERACT_COMMAND_KEY;

if (event->modifiers().testFlag(Qt::MetaModifier))

obsModifiers |= INTERACT_CONTROL_KEY;

#else

// Handle windows key? Can a browser even trap that key?

if (event->modifiers().testFlag(Qt::ControlModifier))

obsModifiers |= INTERACT_CONTROL_KEY;

#endif

if (!mouseEvent) {

if (event->modifiers().testFlag(Qt::KeypadModifier))

obsModifiers |= INTERACT_IS_KEY_PAD;

}

return obsModifiers;

}

static int TranslateQtMouseEventModifiers(

QMouseEvent *event)

{

int modifiers = TranslateQtKeyboardEventModifiers(event, true);

if (event->buttons().testFlag(Qt::LeftButton))

modifiers |= INTERACT_MOUSE_LEFT;

if (event->buttons().testFlag(Qt::MiddleButton))

modifiers |= INTERACT_MOUSE_MIDDLE;

if (event->buttons().testFlag(Qt::RightButton))

modifiers |= INTERACT_MOUSE_RIGHT;

return modifiers;

}

bool OBSBasicInteraction::GetSourceRelativeXY(

int mouseX, int mouseY, int &relX, int &relY)

{

QSize size = GetPixelSize(ui->preview);

uint32_t sourceCX = max(obs_source_get_width(source), 1u);

uint32_t sourceCY = max(obs_source_get_height(source), 1u);

int x, y;

float scale;

GetScaleAndCenterPos(sourceCX, sourceCY, size.width(), size.height(),

x, y, scale);

if (x > 0) {

relX = int(float(mouseX - x) / scale);

relY = int(float(mouseY / scale));

} else {

relX = int(float(mouseX / scale));

relY = int(float(mouseY - y) / scale);

}

// Confirm mouse is inside the source

if (relX < 0 || relX > int(sourceCX))

return false;

if (relY < 0 || relY > int(sourceCY))

return false;

return true;

}

bool OBSBasicInteraction::HandleMouseClickEvent(

QMouseEvent *event)

{

bool mouseUp = event->type() == QEvent::MouseButtonRelease;

int clickCount = 1;

if (event->type() == QEvent::MouseButtonDblClick)

clickCount = 2;

struct obs_mouse_event mouseEvent = {};

mouseEvent.modifiers = TranslateQtMouseEventModifiers(event);

int32_t button = 0;

switch (event->button()) {

case Qt::LeftButton:

button = MOUSE_LEFT;

break;

case Qt::MiddleButton:

button = MOUSE_MIDDLE;

break;

case Qt::RightButton:

button = MOUSE_RIGHT;

break;

default:

blog(LOG_WARNING, "unknown button type %d",

event->button());

return false;

}

// Why doesn't this work?

//if (event->flags().testFlag(Qt::MouseEventCreatedDoubleClick))

// clickCount = 2;

bool insideSource = GetSourceRelativeXY(event->x(), event->y(),

mouseEvent.x, mouseEvent.y);

if (mouseUp || insideSource)

obs_source_send_mouse_click(source, &mouseEvent, button,

mouseUp, clickCount);

return true;

}

bool OBSBasicInteraction::HandleMouseMoveEvent(QMouseEvent *event)

{

struct obs_mouse_event mouseEvent = {};

bool mouseLeave = event->type() == QEvent::Leave;

if (!mouseLeave) {

mouseEvent.modifiers = TranslateQtMouseEventModifiers(event);

mouseLeave = !GetSourceRelativeXY(event->x(), event->y(),

mouseEvent.x, mouseEvent.y);

}

obs_source_send_mouse_move(source, &mouseEvent, mouseLeave);

return true;

}

bool OBSBasicInteraction::HandleMouseWheelEvent(QWheelEvent *event)

{

struct obs_mouse_event mouseEvent = {};

mouseEvent.modifiers = TranslateQtKeyboardEventModifiers(event, true);

int xDelta = 0;

int yDelta = 0;

if (!event->pixelDelta().isNull()) {

if (event->orientation() == Qt::Horizontal)

xDelta = event->pixelDelta().x();

else

yDelta = event->pixelDelta().y();

} else {

if (event->orientation() == Qt::Horizontal)

xDelta = event->delta();

else

yDelta = event->delta();

}

if (GetSourceRelativeXY(event->x(), event->y(), mouseEvent.x,

mouseEvent.y))

obs_source_send_mouse_wheel(source, &mouseEvent, xDelta,

yDelta);

return true;

}

bool OBSBasicInteraction::HandleFocusEvent(QFocusEvent *event)

{

bool focus = event->type() == QEvent::FocusIn;

obs_source_send_focus(source, focus);

return true;

}

bool OBSBasicInteraction::HandleKeyEvent(QKeyEvent *event)

{

struct obs_key_event keyEvent;

QByteArray text = event->text().toUtf8();

keyEvent.modifiers = TranslateQtKeyboardEventModifiers(event, false);

keyEvent.text = text.data();

keyEvent.native_modifiers = event->nativeModifiers();

keyEvent.native_scancode = event->nativeScanCode();

keyEvent.native_vkey = event->nativeVirtualKey();

bool keyUp = event->type() == QEvent::KeyRelease;

obs_source_send_key_click(source, &keyEvent, keyUp);

return true;

}

void OBSBasicInteraction::Init()

{

show();

}

obs-studio-ftl/UI/window-basic-interaction.cpp at develop · mixer/obs-studio-ftl · GitHub

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