port the code for OpenGL

[prashant-saxena]

Hi,
What you have done in SplitterCtrl is exactly what I'm looking for to implement in OpenGL. I already started working on my implementation and found SplitterCtrl by chance. If you are interested then we can further discuss it and I can send you initial code for setting up OpenGL and drawing.

Cheers
Prashant

[AlehBaradzenka]

Hi Prashant,

Thanks for your interest in my control. Contact me if you need help, ready to answer any of your questions.

Good luck!

[prashant-saxena]

Hi,
Thanks for the positive response. To start with we need a ripped version of SplitterCtrl. This means removal of all windows api stuff or comment it out and make the class completely independent. This new SplitterCtrl will have all the logic but no actual
drawing code. This way we can easily integrate in any environment.

Create a new ctrl by specifying the initial size and then add columns, rows and windows normally.

auto splitCtrl = SplitterCtrl(800,600);

These two function should be slightly changed

void SetWindow(int row, int col, HWND hWnd);
HWND GetWindow(int row, int col) const;

new ones

void SetWindow(int row, int col, "main"); // specify the name of the window, should be unique, not repeated.
Window GetWindow(int row, int col) const; // ok
Window GetWindow(string name) const; // return the named window
Recti GetWindowRect(string name); // Return the rect of the window
// The Window is a simple struct

struct Window {
 string name;
Recti size; // x, y, w, h
Colorf bgColor; // r, g, b, a
}; 

After creating all the windows and updation, the method GetWindowRect should return the Rect with x, y, w, z values. Here x,y are the coordinates of the top left position and w, h is the width and height of the window. This rect is the actual drawing area of the window excluding size of splitter bars.
A simple iterator

for(auto win in windows ) {
    cout << win.name << win.size.x << win.size.y << win.size.w << win.size.h << endl;
}

When user changes the size of the main window, a method to update the size of splitterctrl:

void SetSize(width, height);

Internally this will update the coordinates of all the windows based on new size.

To change the cursor shape when moving over the splitter bars

void drawCursor(int xpos, int ypos)

Here xpos and ypos are the current mouse coordinates in pixel unit. Based on these coordinates the logic will change the cursor. We can leave the part where actually the cursor needs to be changed. Depending on the environment for e..g I'll be using glfw3 for creating the window, one can write actual code that is required to change the cursor. For example:

void drawCursor(int xpos, int ypos)
{
if(cross_hair_required)
    glfwCreateStandardCursor(GLFW_CROSSHAIR_CURSOR);
else if (hresize_required())
    glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
else if (vresize_required())
    glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);
else
    glfwCreateStandardCursor(GLFW_NORMAL_CURSOR);
}

I think it's enough to start with and moving of splitter bars would be done in stage 2. I'm open for suggestions and ideas so please don't mind sharing it. Now if you can provide me a new SplitterCtrl class as discussed above then I can write initial integration with OpenGL environment and share with you.

Cheers
Prashant

[AlehBaradzenka]

Hi Prashant,

Excuse me, probably you didn't understand me properly. I don't have enough time for any developing at the moment. I can only help you with some small things or answer some questions. Sorry again.

Best wishes