MultiSelect problem

[Nitr0-G]

Hi! Thank you so much for such a thing as ImGui and thank you so much for the large number of examples and various ready-made widgets/snippets!

Is multiselect of bytes support planned here? Something like this ocornut/imgui#1861

[ocornut]

Hello,
I never thought of it in the context of the memory-editor, AFAIK multi-select imply stuff like deleting a selection, which imply offsetting and resizing the buffer, at that point we are leading toward a more full-featured hex editor.

Which multi-select feature in particular were you thinking about?

[Nitr0-G]

Hello, I never thought of it in the context of the memory-editor, AFAIK multi-select imply stuff like deleting a selection, which imply offsetting and resizing the buffer, at that point we are leading toward a more full-featured hex editor.

Which multi-select feature in particular were you thinking about?

Hi, I was thinking about multi-selections in the form of copying bytes and selecting them to convert, for example, to a string.
For example, as here:

https://github.com/WerWolv/ImHex/blob/491e2dfe56aef9778317cc80f62705101acaaccd/plugins/ui/source/ui/hex_editor.cpp#L399

I apologize for the long answer.

[Nitr0-G]

I started doing multiselection and first I made a function to calculate if I am in a cell. If I'm in cell, then next I look at mouse click and dragging.

    bool IsMouseHoveringCurrentTableCell(float rowHeight)
    {
        ImVec2 cellMin = ImGui::GetCursorScreenPos();
        ImVec2 cellMax = ImVec2(cellMin.x + ImGui::GetColumnWidth(), cellMin.y + rowHeight);
        return ImGui::IsMouseHoveringRect(cellMin, cellMax);
    }
    
    static void HandleCellSelection() 
    {
        if (ImGui::IsMouseDragging(ImGuiMouseButton_Left))
        {

        }
        else if (ImGui::IsMouseClicked(ImGuiMouseButton_Left))
        {
            if (ImGui::GetIO().KeyShift)
            {

            }
            else
            {

            }
        }
    }
    
    void DrawContents(void* mem_data_void, size_t mem_size, size_t base_display_addr = 0x0000)
    {
    ... code
          if (IsMouseHoveringCurrentTableCell(17) && ImGui::IsWindowHovered())
          {
                   HandleCellSelection();
          }
    ... code                    
    }

Omar, I need your little help. How can I draw a rectangle on top of the cell? Since such an implementation seems to work, but it doesn't seem to, since the rectangle itself simply does not exist.

        auto drawList = ImGui::GetWindowDrawList();

        // Draw background color
        drawList->AddRectFilled(cellPos, { cellPos.x + cellSize.x, cellPos.y + cellSize.y }, backgroundColor);

        // Draw selection frame as a square
        ImU32 SelectionFrameColor = ImGui::GetColorU32(ImGuiCol_Text);
        drawList->AddRect(cellPos, { cellPos.x + cellSize.x, cellPos.y + cellSize.y }, SelectionFrameColor, 0, ImDrawFlags_RoundCornersAll, 1);

[Nitr0-G]

I made it

I also made a right-click menu and a lot of other things.