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glutGet(GLUT_WINDOW_X) and glutGet(GLUT_WINDOW_Y) on a child window now

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return top-left of child w.r.t. parent's client area
resizer demo now also has child window button 'c'. doesn't work with
fullscreen for some reason....


git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1367 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
dcnieho 2012-07-23 13:52:55 +00:00
parent b5664b39e7
commit 8fb0c5d924
2 changed files with 152 additions and 34 deletions
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133
freeglut/freeglut/progs/demos/Resizer/Resizer.cpp
View File

@ -2,21 +2,26 @@
#include <GL/freeglut.h>
int nWindow;
int nWindow, nChildWindow = -1;
int nLoopMain = 0;
int nPosX, nPosY;
int nWidth, nHeight;
GLboolean bChildPosDone = GL_FALSE, bChildSizeDone = GL_FALSE;
void SampleKeyboard( unsigned char cChar, int nMouseX, int nMouseY );
void Redisplay();
void Reshape(int x, int y);
void DrawQuad()
{
nWidth = glutGet(GLUT_WINDOW_WIDTH);
nHeight = glutGet(GLUT_WINDOW_HEIGHT);
glBegin(GL_QUADS);
glVertex2d(nWidth*.25, nHeight*.75);
glVertex2d(nWidth*.75, nHeight*.75);
@ -27,25 +32,62 @@ void DrawQuad()
void SampleKeyboard( unsigned char cChar, int nMouseX, int nMouseY )
{
if (cChar == 27)
switch (cChar)
{
case 27:
glutLeaveMainLoop();
else if (cChar=='f')
{
printf("main window toggle fullscreen\n");
break;
case 'f':
case 'F':
printf("main window toggle fullscreen\n");
glutFullScreenToggle();
break;
case 'r':
case 'R':
if (nChildWindow!=-1)
{
glutSetWindow(nChildWindow);
printf("child window resize\n");
if (!bChildSizeDone)
glutReshapeWindow(glutGet(GLUT_WINDOW_WIDTH)+50,glutGet(GLUT_WINDOW_HEIGHT)+50);
else
glutReshapeWindow(glutGet(GLUT_WINDOW_WIDTH)-50,glutGet(GLUT_WINDOW_HEIGHT)-50);
bChildSizeDone = !bChildSizeDone;
}
else if (cChar=='r')
else
{
printf("main window resize\n");
if (nWidth<400)
glutReshapeWindow(600,300);
else
glutReshapeWindow(300,300);
}
else if (cChar=='m')
break;
case 'm':
case 'M':
if (nChildWindow!=-1)
{
glutSetWindow(nChildWindow);
/* The window position you request is relative to the top-left
* corner of the client area of the parent window.
*/
if (!bChildPosDone)
glutPositionWindow(glutGet(GLUT_WINDOW_X)+50,glutGet(GLUT_WINDOW_Y)+50);
else
glutPositionWindow(glutGet(GLUT_WINDOW_X)-50,glutGet(GLUT_WINDOW_Y)-50);
bChildPosDone = !bChildPosDone;
}
else
{
printf("main window position\n");
@ -58,6 +100,40 @@ void SampleKeyboard( unsigned char cChar, int nMouseX, int nMouseY )
else
glutPositionWindow(300,300);
}
break;
case 'c':
case 'C':
if (nChildWindow==-1)
{
/* open child window */
printf("open child window\n");
nWidth = glutGet(GLUT_WINDOW_WIDTH);
nHeight = glutGet(GLUT_WINDOW_HEIGHT);
nChildWindow = glutCreateSubWindow(nWindow,(int)(nWidth*.35),(int)(nHeight*.35),(int)(nWidth*.3),(int)(nHeight*.3));
glutKeyboardFunc( SampleKeyboard );
glutDisplayFunc( Redisplay );
glutReshapeFunc( Reshape );
}
else
{
/* close child window */
printf("close child window\n");
glutSetWindow(nWindow);
glutDestroyWindow(nChildWindow);
nChildWindow = -1;
bChildSizeDone = GL_FALSE;
bChildPosDone = GL_FALSE;
}
break;
default:
break;
}
}
void Idle(void)
@ -67,18 +143,32 @@ void Idle(void)
void Reshape(int x, int y)
{
int win = glutGetWindow();
nWidth = glutGet(GLUT_WINDOW_WIDTH);
nHeight = glutGet(GLUT_WINDOW_HEIGHT);
printf("reshape %s, %dx%d\n",win==nWindow?"main":"child",
nWidth, nHeight);
glViewport(0,0,nWidth,nHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0,nWidth,0,nHeight);
if (win==nWindow && nChildWindow!=-1)
{
glutSetWindow(nChildWindow);
glutPositionWindow((int)(nWidth*.35),(int)(nHeight*.35));
glutReshapeWindow((int)(nWidth*.3),(int)(nHeight*.3));
glutSetWindow(nWindow);
}
}
void Redisplay(void)
{
if (nLoopMain++%6==0)
int win = glutGetWindow();
if (nLoopMain++%20==0)
{
int border, caption;
@ -96,20 +186,35 @@ void Redisplay(void)
* or simply when maximized--try pressing the maximize button).
* the returned size is the size of the client area
*/
printf("window now %dx%d, top-left of client at: (%d,%d), of window at: (%d,%d)\n",
if (win==nWindow)
printf("main window %dx%d, top-left of client at: (%d,%d), of window at: (%d,%d)\n",
nWidth, nHeight,
nPosX ,nPosY,
nPosX-border,
nPosY-border-caption);
else
printf("child window %dx%d, top-left of client at: (%d,%d), relative to parent\n",
nWidth, nHeight,
nPosX ,nPosY);
}
if (win==nWindow)
{
glClearColor(.2f,0.f,0.f,0.f);
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1,1,1);
}
else
{
/* child window */
glClearColor(.0f,.2f,0.f,0.f);
glColor3f(.5,.5,.5);
glutPostWindowRedisplay(nWindow);
}
glClear(GL_COLOR_BUFFER_BIT);
DrawQuad();
glutSwapBuffers();
glutPostRedisplay();
glutPostWindowRedisplay(win);
}
@ -136,5 +241,5 @@ int main(int argc, char* argv[])
glutMainLoop();
printf("glutMainLoop returned\n");
return 1;
return EXIT_SUCCESS;
}

13
freeglut/freeglut/src/mswin/fg_state_mswin.c
View File

@ -183,6 +183,19 @@ int fgPlatformGlutGet ( GLenum eWhat )
GetWindowRect( fgStructure.CurrentWindow->Window.Handle, &winRect );
#else
winRect = fghGetClientArea(fgStructure.CurrentWindow, FALSE);
if (fgStructure.CurrentWindow->Parent && (eWhat==GLUT_WINDOW_X || eWhat==GLUT_WINDOW_Y))
{
/* For child window, we should return relative to upper-left
* of parent's client area.
*/
POINT topleft;
topleft.x = winRect.left;
topleft.y = winRect.top;
ScreenToClient(fgStructure.CurrentWindow->Parent->Window.Handle,&topleft);
winRect.left = topleft.x;
winRect.top = topleft.y;
}
#endif /* defined(_WIN32_WCE) */
switch( eWhat )