Messages

Hey, I am trying to have a SFML Canvas in which I can navigate with 1 or 2 fingers.
I want to zoom in the view by pinching 2 fingers, but I need to keep track of each finger down and their position.
I know touch events are translated to mouse events for most cases. So I can't handle zooming with the information leftMousePressed is giving me.
Is there a trick to have a better fingers handle, or can I just cancel all tgui events for this widget and transmit SFML's ones ?
thank you

"4 * (nrCornerPoints - 1)"
Oooh that's where I was wrong, I didn't see this -1 my bad 
Thanks for the reply

Hey, I'm not sure about this, but I looked in your drawRoundedRectHelperGetPoints code to help myself with a project, and I think your computation for Bottom left corner and Bottom right corner is slighty offset.
Instead of:

Code Select Expand

// Bottom left corner
        for (unsigned int i = 0; i < nrCornerPoints; ++i)
        {
            points.emplace_back(offset + radius + (radius * std::cos(twoPi * (2*(nrCornerPoints - 1) + i) / nrPointsInCircle)),
                                offset + size.y - radius - (radius * std::sin(twoPi * (2*(nrCornerPoints - 1) + i) / nrPointsInCircle)));
        }

        // Bottom right corner
        for (unsigned int i = 0; i < nrCornerPoints; ++i)
        {
            points.emplace_back(offset + size.x - radius + (radius * std::cos(twoPi * (3*(nrCornerPoints - 1) + i) / nrPointsInCircle)),
                                offset + size.y - radius - (radius * std::sin(twoPi * (3*(nrCornerPoints - 1) + i) / nrPointsInCircle)));
        }
The following will give more accurate result:

Code Select Expand

// Bottom left corner
        for (unsigned int i = 0; i < nrCornerPoints; ++i)
        {
            points.emplace_back(offset + radius + (radius * std::cos(twoPi * ((2*nrCornerPoints - 1) + i) / nrPointsInCircle)),
                                offset + size.y - radius - (radius * std::sin(twoPi * ((2*nrCornerPoints - 1) + i) / nrPointsInCircle)));
        }

        // Bottom right corner
        for (unsigned int i = 0; i < nrCornerPoints; ++i)
        {
            points.emplace_back(offset + size.x - radius + (radius * std::cos(twoPi * ((3*nrCornerPoints - 1) + i) / nrPointsInCircle)),
                                offset + size.y - radius - (radius * std::sin(twoPi * ((3*nrCornerPoints - 1) + i) / nrPointsInCircle)));
        }

The problem was removing 1 before multiplied by 2 (or 3 for the next corner), we need to remove it after the multiplication.

Tell me if I am wrong.

Two finger scrolling is working !
I was trying to implement the one finger scroll with your above code,
but I have a linker error on this function

Code Select Expand

widgetBelowMouse->isDraggableWidget()isDraggableWidget's implementation seems to be missing in Widget.cpp ?

padding is a float

Code Select Expand

m_label->setAutoSize(true);
m_label->setPosition("50%", tgui::bindWidth(m_group)*padding);

Then later in the same function :

Code Select Expand

m_group->setSize("25%", tgui::bindBottom(lastPtr)+tgui::bindWidth(m_group)*padding);

Indeed if m_label has a fixed pos, no warning. But I don't understand the dependency cycle here.

Everything is binded to the known width of m_group (25% of screen), then height of m_group is computed from last widget in the layout

The whole function is needed :

Code Select Expand

assert(m_group);
    tgui::Widget::Ptr lastPtr = nullptr;
    //between 0 and 1, %
    float padding = 0.05f;

    auto layoutVisuStack = [this, &lastPtr, padding](std::vector<C_RecipeProcessing::ItemStackVisu> &listVisu){
        if(listVisu.size()){
            auto groupItem = tgui::Group::create();

            if(lastPtr)
                groupItem->setPosition(0,tgui::bindBottom(lastPtr)+tgui::bindWidth(groupItem)*padding);
            else
                groupItem->setPosition(0,tgui::bindWidth(groupItem)*padding);

            auto nbInt = (int)listVisu.size();
            auto nbDiv = std::max(3,nbInt);
            auto l = (tgui::bindWidth(groupItem)-(tgui::bindWidth(groupItem)*padding*(nbInt+1)))/nbDiv;
            groupItem->setSize("100%", l);

            for(auto i=0;i<listVisu.size();i++){
                auto itemWidget = PictureTextWidget::create(PictureText::fromItemStack(listVisu[i].itemStack));
                itemWidget->setOrigin(0.5f,0.f);
                itemWidget->setSize(l,l);
                itemWidget->setPosition(tgui::bindWidth(groupItem)/(nbInt+1) * (i+1),0);
                groupItem->add(itemWidget);
                listVisu[i].itemStackWidget = itemWidget;
            }

            m_group->add(groupItem);
            lastPtr = groupItem;
        }
    };


    //inputs
    layoutVisuStack(m_inputs);

    //middle
    m_label = tgui::Label::create();
    m_label->setRenderer(TextureLoader::getTheme().getRenderer("LabelInfoWindow"));
    m_label->setAutoSize(true);
    m_label->setOrigin(0.5f, 0.f);
    if(lastPtr)
        m_label->setPosition("50%", tgui::bindBottom(lastPtr)+tgui::bindWidth(m_group)*padding);
    else
        m_label->setPosition("50%", tgui::bindWidth(m_group)*padding);
    m_group->add(m_label);
    lastPtr = m_label;

    if(m_recipe){
        m_panelRecipe = getGUI(m_recipe);
        m_panelRecipe->setWidth(tgui::bindWidth(m_group)*0.8);
    }

    //WARNING
    m_timeProgressBar = TimeProgressBar::create();
    m_timeProgressBar->setOrigin(0.5f, 0.f);
    m_timeProgressBar->setPosition("50%", tgui::bindBottom(m_label));
    m_timeProgressBar->setSize("90%", 40);
    m_group->add(m_timeProgressBar);
    lastPtr = m_timeProgressBar;

    //NO WARNING
    auto test = tgui::ProgressBar::create();
    test->setOrigin(0.5f, 0.f);
    test->setPosition("50%", tgui::bindBottom(m_label));
    test->setSize("90%", 40);
    m_group->add(test);
    lastPtr = test;

    //outputs
    layoutVisuStack(m_outputs);

    if(lastPtr)
        m_group->setSize("25%", tgui::bindBottom(lastPtr)+tgui::bindWidth(m_group)*padding);
    else
        m_group->setSize("25%", 0);

    updateGUI();

    std::cout << m_timeProgressBar->getPositionLayout().toString() << std::endl;
    std::cout << m_timeProgressBar->getSizeLayout().toString() << std::endl;


Yep thank you !

Hello,
I am facing a warning :

TGUI warning: Dependency cycle detected in layout!

with this layout:

Code Select Expand

    m_timeProgressBar = TimeProgressBar::create();
    m_timeProgressBar->setOrigin(0.5f, 0.f);
    m_timeProgressBar->setPosition("50%", tgui::bindBottom(m_label));
    m_timeProgressBar->setSize("90%", 40);
    m_group->add(m_timeProgressBar);
The warning is caused by the line

Code Select Expand

m_timeProgressBar->setPosition("50%", tgui::bindBottom(m_label)); If I comment it, everything is fine.
With the embedded progress bar, everything is fine :

Code Select Expand

    auto test = tgui::ProgressBar::create();
    test->setOrigin(0.5f, 0.f);
    test->setPosition("50%", tgui::bindBottom(m_label));
    test->setSize("90%", 40);
    m_group->add(test);

The weird thing is that I don't override setPosition in my custom bar:

Code Select Expand

#pragma once

#include "../../../Utils/utils.hpp"

class TimeProgressBar : public tgui::ProgressBar
{
public:
    // Add a Ptr typedef so that "MyCustomWidget::Ptr" has the correct type
    typedef std::shared_ptr<TimeProgressBar> Ptr;
    typedef std::shared_ptr<const TimeProgressBar> ConstPtr;

    TimeProgressBar();
    static TimeProgressBar::Ptr create();
    static TimeProgressBar::Ptr copy(TimeProgressBar::ConstPtr widget);

    /**
     * @brief Set the Percentage, between 0 and 1 or will be truncated
     *
     * @param percentage between 0 and 1
     */
    void setPercentage(float percentage);

    /**
     * @brief Set the Current Time, between 0 and maxTime or will be clamped
     *
     * @param time between 0 and maxTime
     */
    void setCurrentTime(sf::Time time);

    void setMaxTime(sf::Time time);
    void setReverse(bool act);


private:
    Widget::Ptr clone() const override;

    void updateText();
    void updateValue();

    /**
     * @brief the time is display with raw value currentTime / timeMax
     */
    bool m_rawValue;

    /**
     * @brief time will start from 0 to maxTime, or maxTime to 0
     */
    bool m_reverse;

    sf::Time m_currentTime;
    sf::Time m_maxTime;
};


I there a way to define a size binding to a parent size without actually knowing it ?
I would like to do something like this :

Code Select Expand

    auto min = tgui::bindMin(tgui::bindParentWidth(ptr), tgui::bindParentHeight(ptr));
    ptr->setSize(min*0.16, min*0.16);
    //...somewhere else in the code...
    gui.add(ptr)


I face a crash bug since I went from build baf9c5e73935453e357a9e8bda8df86bb83ed3e0 to last build (789aca88603268af99a416af6c0f11be1d03a7b8)
I cant manage to see where the bug is, this is the callstack :

Code Select Expand

libtgui-d.so.1.0.0!tgui::Container::processKeyPressEvent(tgui::Container * const this, tgui::Event::KeyEvent event) (/home/user/Desktop/dev/fc/external_deps/TGUI/src/Container.cpp:1252)
libtgui-d.so.1.0.0!tgui::BackendGui::handleEvent(tgui::BackendGui * const this, tgui::Event event) (/home/user/Desktop/dev/fc/external_deps/TGUI/src/Backend/Window/BackendGui.cpp:181)
libtgui-d.so.1.0.0!tgui::BackendGuiSFML::handleEvent(tgui::BackendGuiSFML * const this, sf::Event sfmlEvent) (/home/user/Desktop/dev/fc/external_deps/TGUI/src/Backend/Window/SFML/BackendGuiSFML.cpp:219)
GuiManager::event(GuiManager * const this, const sf::Event & event) (/home/user/Desktop/dev/fc/fc_game/src/Graphics/GuiManager.cpp:88)
SceneLogin::loop(SceneLogin * const this) (/home/user/Desktop/dev/fc/fc_game/src/Scenes/SceneLogin.cpp:169)
Application::run(Application * const this) (/home/user/Desktop/dev/fc/fc_game/src/Core/Application.cpp:259)
main() (/home/user/Desktop/dev/fc/fc_game/src/Core/Application.cpp:56)

And vsc debugger told me there is a segmentation fault in the line :

Code Select Expand

            const bool bHandled = m_focusedWidget->canHandleKeyPress(event); // TGUI_NEXT: Have keyPressed return a bool


Code Select Expand

m_focusedWidget seems to be nullptr (I dont understand that because there is a checking if just before)

The idea of my code was to lunch a callback when user presses enter when focusing an editbox.
In the Constructor of my object :

Code Select Expand

    m_editBoxEmailSignIn->onReturnKeyPress(&SceneLogin::trySignIn, this);
    m_editBoxEmailSignIn->setFocused(true);


Code Select Expand

void SceneLogin::trySignIn(){
    //TODO: remove backdoor
    if(m_editBoxEmailSignIn->getText() == "dev"){
        this->m_continueLoop = false;
        this->m_appli.launchAllLoading();
        this->m_appli.launchSceneBase({0, 0});

        return;
    }

    //bla bla bla

The strange thing is the crash only appears when the above condition

Code Select Expand

if(m_editBoxEmailSignIn->getText() == "dev"){ is true, if user doesnt input "dev", then the program doesnt crash.

I am not even sure if this is about my code or something, could you give me your thoughts ?

The upside down issue is no longer here !
+ Better performance

Thank you very much !

Yep you are right it's indeed flipped, my bad I should have looked into SFML's github issue (I just looked through forum)
I though SFML was ok because I had several other sf::RenderTexture not upside down.
I don't know where exactly SFML is broken but having a sf::Sprite directly using a sf::RenderTexture seems to be working
Thank you anyway, I'll wait the bug fix
About the performance issue, is there anything I can do to manage it ?

I'm sure this is about TGUI now,
and there is also a huge FPS drop while canvas are rendered, I have not digged in into your code, but I understood that Canvas is just a sort of a wrapper around an sf::RenderTexture, with some automatic creation / resizing to fit TGUI size model

Yep I use display() directly from canvas object
I have a object with :

Code Select Expand

        m_canvas->clear();
        m_sc.get().drawMapOnTarget(m_canvas->getRenderTexture(), m_viewToFocusEntity);
        m_canvas->display();
And another with:

Code Select Expand

    m_canvas->setView(m_view);
    m_canvas->clear();
    m_canvas->draw(m_spriteMiniMap);
    m_canvas->display();
Both are upside down while on Ubuntu it's ok.
Drawing in sf::RenderTexture seems to be as expected

Working with Canvas to draw some SFML stuff in a GUI.
I noticed with only Android (Ubuntu it's as expected), textures inside Canvas are rendered upside down.
I am not sure this is about TGUI or SFML though. Do you have any idea ?

Hello,
Wouldn't be useful to have setTextSize of Widget take a Layout as parameter ? Now if I want to change text size when parent resize, I have to set a callback on onSizeChange signal.
Thanks

Ok thank you 

[signIn]

Hello, it is probably not relevant to tgui but here is my problem
I have a gRPC call in async mode, signIn asks the server and when it responds, signIn executes the given lambda, my idea was to modify tgui objects in my lambda, here m_labelStatus:

Code Select Expand

    m_labelStatus->setText("Login in...");

    m_gc.m_connectionService.signIn([this](ConnectionService::SignInReturn& signInReturn){
        if (signInReturn.status.ok()) {
            LOG_DEBUG("{}",signInReturn.data->reply.jwt());
        } else {
            LOG_DEBUG("{}: {}",(int)signInReturn.status.error_code(),signInReturn.status.error_message());
            m_labelStatus->setText("Error: "+signInReturn.status.error_message());
        }
    });

However, the program crashes when it comes to the line

Code Select Expand

m_labelStatus->setText("Error: "+signInReturn.status.error_message());Here is the callstack:

Code Select Expand

ntdll.dll!ntdll!RtlRegisterSecureMemoryCacheCallback (Unknown Source:0)
ntdll.dll!ntdll!memset (Unknown Source:0)
ntdll.dll!ntdll!RtlRegisterSecureMemoryCacheCallback (Unknown Source:0)
ntdll.dll!ntdll!RtlGetCurrentServiceSessionId (Unknown Source:0)
ntdll.dll!ntdll!RtlGetCurrentServiceSessionId (Unknown Source:0)
ntdll.dll!ntdll!RtlFreeHeap (Unknown Source:0)
msvcrt.dll!msvcrt!free (Unknown Source:0)
sfml-graphics-2.dll!FT_Bitmap_Done (Unknown Source:0)
sfml-graphics-2.dll!FT_Done_Glyph (Unknown Source:0)
sfml-graphics-2.dll!sf::Font::loadGlyph(unsigned int, unsigned int, bool, float) const (Unknown Source:0)
sfml-graphics-2.dll!sf::Font::getGlyph(unsigned int, unsigned int, bool, float) const (Unknown Source:0)
sfml-graphics-2.dll!sf::Font::getKerning(unsigned int, unsigned int, unsigned int, bool) const (Unknown Source:0)
tgui.dll!tgui::BackendFontSFML::getKerning(char32_t, char32_t, unsigned int, bool) (Unknown Source:0)
tgui.dll!tgui::BackendText::updateVertices() (Unknown Source:0)
tgui.dll!tgui::BackendText::getSize() (Unknown Source:0)
tgui.dll!tgui::Label::rearrangeText() (Unknown Source:0)
operator()(const struct {...} * const __closure, ConnectionService::SignInReturn & signInReturn) (c:\FactoryCapi\app\src\main\jni\sources\Scenes\SceneLogin.cpp:210)
std::__invoke_impl<void, SceneLogin::trySignIn()::<lambda(ConnectionService::SignInReturn&)>&, ConnectionService::SignInReturn&>(std::__invoke_other, struct {...} &)(struct {...} & __f) (c:\progra~1\mingw64\include\c++\12.3.0\bits\invoke.h:61)
std::__invoke_r<void, SceneLogin::trySignIn()::<lambda(ConnectionService::SignInReturn&)>&, ConnectionService::SignInReturn&>(struct {...} &)(struct {...} & __fn) (c:\progra~1\mingw64\include\c++\12.3.0\bits\invoke.h:111)
std::_Function_handler<void(ConnectionService::SignInReturn&), SceneLogin::trySignIn()::<lambda(ConnectionService::SignInReturn&)> >::_M_invoke(const std::_Any_data &, ConnectionService::SignInReturn &)(const std::_Any_data & __functor,  __args#0) (c:\progra~1\mingw64\include\c++\12.3.0\bits\std_function.h:290)

Do you know why there is this problem ?
Previously I was handling my grpc returns in an external not async function. But it required me to have a dedicated function called once per frame... So now I am trying to directly handle grpc returns when they arrived

Ok this is good with canvas, I could manage to have something cool

but if you override the isMouseOnWidget to always return false then the events should pass to the widget behind it

Yes my bad I was wrong on something,
Thank you

Which clipping? Some clipping from your own code? Because a custom widget can define a clipping region during its draw code.

Yes I was talking of my own custom clipping in my custom draw function

Have you tried drawing the sprite to a tgui::CanvasSFML (https://tgui.eu/tutorials/1.0/canvas/)?

My bad I didn't know this widget, it is quite useful indeed. Just one question, I have a canvas full screen, and most of it is transparent, but the whole canvas is triggering events so even if I click on transparent area, the event is consumed. I tried to define a custom isMouseOnWidget to return false (because I dont care about events on this widget) but the event is still consumed.

How big an how long are you talking about?

I have a huge sf::RenderTexture somewhere, I want to do a "minimap" widget of it. I defined a custom widget to add two scrollbars and originally a tgui::sprite to draw the map. But of course the data is copied.
I should success to have something with canvasSFML

Is there really no way to avoid data copying when create a Sprite from sf::Texture ?
I want to have a widget that embed a huge sf::Texture, but it takes some time to copy it into a tgui::Texture and I dont like that.
I thought I could do a trick by drawing a sfml sprite in the draw function of my custom widget but the clipping doesn't work anymore obviously.
Is there a way, even tricky with custom code, to have a reference to sfml texture data ?
Thank you

On nightly built,
I was using the method getTarget() from tgui::SFML_GRAPHICS::Gui object,
I've got this linker error:

Code Select Expand

ld.lld: error: undefined symbol: __declspec(dllimport) tgui::SFML_GRAPHICS::Gui::getTarget() constIn SFML_Graphics files, there is in .hpp

Code Select Expand

TGUI_NODISCARD sf::RenderTarget* getTarget() const;but no implementation in .cpp, is it on purpose ?

It's seems that it's due to gcc 13.1, a lot of libraries are getting this error too

Hello,
I was trying to build TGUI from source with cmake:

Code Select Expand

FetchContent_Declare(
  tgui
  GIT_REPOSITORY https://github.com/texus/TGUI
  GIT_TAG v1.0-beta
)
set(TGUI_BACKEND SFML_GRAPHICS)
FetchContent_MakeAvailable(tgui)

With compiler: winlibs-x86_64-posix-seh-gcc-13.1.0-mingw-w64msvcrt-11.0.0-r5
On Windows 10 64bits
With set(CMAKE_CXX_STANDARD 20)

I have got some errors in Utf.hpp file,

Code Select Expand

error: 'uint8_t' is not a member of 'std'; did you mean 'wint_t'?     
   66 |             std::uint8_t firstByteMask;

After some research, I just added #include <cstdint> on top of the file and everything goes well

Just to let you know

Thank you it is ok now