Textured + hover buttons

17 files changed, 292 insertions, 99 deletions

diff --git a/menu_demo/Debug/BuildLog.htm b/menu_demo/Debug/BuildLog.htm
index 7eef82b..7f8a7b8 100644
--- a/menu_demo/Debug/BuildLog.htm
+++ b/menu_demo/Debug/BuildLog.htm
diff --git a/menu_demo/Debug/main.obj b/menu_demo/Debug/main.obj
index 93f703d..8903e96 100644
--- a/menu_demo/Debug/main.obj
+++ b/menu_demo/Debug/main.obj
diff --git a/menu_demo/Debug/menu.obj b/menu_demo/Debug/menu.obj
index 3e829eb..778e34a 100644
--- a/menu_demo/Debug/menu.obj
+++ b/menu_demo/Debug/menu.obj
diff --git a/menu_demo/Debug/menu_demo.exe b/menu_demo/Debug/menu_demo.exe
index ec6ec8e..098e87c 100644
--- a/menu_demo/Debug/menu_demo.exe
+++ b/menu_demo/Debug/menu_demo.exe
diff --git a/menu_demo/Debug/menu_demo.ilk b/menu_demo/Debug/menu_demo.ilk
index 372a9b1..2dd334b 100644
--- a/menu_demo/Debug/menu_demo.ilk
+++ b/menu_demo/Debug/menu_demo.ilk
diff --git a/menu_demo/Debug/menu_demo.pdb b/menu_demo/Debug/menu_demo.pdb
index 2653140..47c70fd 100644
--- a/menu_demo/Debug/menu_demo.pdb
+++ b/menu_demo/Debug/menu_demo.pdb
diff --git a/menu_demo/Debug/mt.dep b/menu_demo/Debug/mt.dep
index 5e3a360..419dc51 100644
--- a/menu_demo/Debug/mt.dep
+++ b/menu_demo/Debug/mt.dep
@@ -1 +1 @@
-Manifest resource last updated at 17:03:43,17 on 16-04-2008 

+Manifest resource last updated at 15:25:11,03 on 17-04-2008 

diff --git a/menu_demo/Debug/vc80.idb b/menu_demo/Debug/vc80.idb
index f50aada..3ed2827 100644
--- a/menu_demo/Debug/vc80.idb
+++ b/menu_demo/Debug/vc80.idb
diff --git a/menu_demo/Debug/vc80.pdb b/menu_demo/Debug/vc80.pdb
index 5ce9f7c..21f28dd 100644
--- a/menu_demo/Debug/vc80.pdb
+++ b/menu_demo/Debug/vc80.pdb
diff --git a/menu_demo/bitmap.c b/menu_demo/bitmap.c
index 1a32f68..edb981d 100644
--- a/menu_demo/bitmap.c
+++ b/menu_demo/bitmap.c
@@ -2,55 +2,72 @@
   #define WIN32_LEAN_AND_MEAN 1

   #include <windows.h>

   #define GL_BGR 0x80E0

-#endif
-
-#include <GL/gl.h>
-#include <GL/glu.h>
-#include <stdio.h>
-
-#include "bitmap.h"
-
-#define BITMAP_FILESIZE 0x02
-#define BITMAP_OFFSET 0x0a
-#define BITMAP_HEADERSIZE 0x0e
-#define BITMAP_WIDTH 0x12
-#define BITMAP_HEIGHT 0x16
-
-void BitmapLoad(char *filename)
-{
-  GLuint texture;
-  FILE *bitmap;
-
-  // try to open the file
-  bitmap = fopen(filename, "rb");
-
-  // does the bitmap exist?
-  if (bitmap > 0)
-  {
-    unsigned int dataoffset, filesize;
-    GLsizei width, height;
-    unsigned char *imagedata;
-
-    fseek(bitmap, BITMAP_FILESIZE, SEEK_SET);
-    fread(&filesize, 4, 1, bitmap);
-    fseek(bitmap, BITMAP_OFFSET, SEEK_SET);
-    fread(&dataoffset, 4, 1, bitmap);
-    fseek(bitmap, BITMAP_WIDTH, SEEK_SET);
-    fread(&width, 4, 1, bitmap);
-    fread(&height, 4, 1, bitmap);
-
-    imagedata = (unsigned char *)malloc((size_t)(filesize -dataoffset));
-
-    fseek(bitmap, dataoffset, SEEK_SET);
-    fread(imagedata, (size_t)(filesize -dataoffset), 1, bitmap);
-
-    glGenTextures(1, &texture);
-    glBindTexture(GL_TEXTURE_2D, texture);
-    gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGB, width, height, GL_BGR, GL_UNSIGNED_BYTE, imagedata);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-	  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
-    free(imagedata);
-    fclose(bitmap);
-  }
-}
+#endif

+

+#include <GL/gl.h>

+#include <GL/glu.h>

+#include <stdio.h>

+#include <stdlib.h>

+

+#include "bitmap.h"

+

+#define BITMAP_FILESIZE 0x02

+#define BITMAP_OFFSET 0x0a

+#define BITMAP_HEADERSIZE 0x0e

+#define BITMAP_WIDTH 0x12

+#define BITMAP_HEIGHT 0x16

+

+

+

+struct ImageStruct BitmapLoad(char *filename)

+{

+  struct ImageStruct l_sImage;

+  GLuint texture;

+  FILE *bitmap;

+

+  // try to open the file

+  bitmap = fopen(filename, "r");

+

+  // does the bitmap exist?

+  if (bitmap > 0)

+  {

+    unsigned int dataoffset, filesize;

+    GLsizei width, height;

+    unsigned char *imagedata;

+

+    fseek(bitmap, BITMAP_FILESIZE, SEEK_SET);

+    fread(&filesize, 4, 1, bitmap);

+    fseek(bitmap, BITMAP_OFFSET, SEEK_SET);

+    fread(&dataoffset, 4, 1, bitmap);

+    fseek(bitmap, BITMAP_WIDTH, SEEK_SET);

+    fread(&width, 4, 1, bitmap);

+    fread(&height, 4, 1, bitmap);

+

+    imagedata = (unsigned char *)malloc((size_t)(filesize -dataoffset));

+

+    fseek(bitmap, dataoffset, SEEK_SET);

+    fread(imagedata, (size_t)(filesize -dataoffset), 1, bitmap);

+

+    glGenTextures(1, &texture);

+    glBindTexture(GL_TEXTURE_2D, texture);

+    gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGB, width, height, GL_BGR, GL_UNSIGNED_BYTE, imagedata);

+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

+	  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

+

+    l_sImage.m_iImageId = texture;

+    l_sImage.m_iWidth   = width;

+    l_sImage.m_iHeight  = height;

+

+    free(imagedata);

+    fclose(bitmap);

+

+    return l_sImage;

+  }

+  else

+  {

+    // couldn't find bitmap

+    exit(0);

+  }

+}

+

+

diff --git a/menu_demo/bitmap.h b/menu_demo/bitmap.h
index 9e68dae..dc300b5 100644
--- a/menu_demo/bitmap.h
+++ b/menu_demo/bitmap.h
@@ -1,6 +1,12 @@
 #ifndef _CBITMAP_H

 #define _CBITMAP_H

 

-void BitmapLoad(char *filename);

+struct ImageStruct {

+  int m_iImageId;

+  int m_iWidth;

+  int m_iHeight;

+};

+

+struct ImageStruct BitmapLoad(char *filename);

 

 #endif

diff --git a/menu_demo/button.c b/menu_demo/button.c
index 7df7b08..365619b 100644
--- a/menu_demo/button.c
+++ b/menu_demo/button.c
@@ -4,56 +4,115 @@
 #endif

 

 #include <GL/gl.h>

+#include <string.h>

+#include <stdio.h>

 

 #include "button.h"

-#include "bitmap.h"

 

-#define BUTTON_CLICK_HEIGHT 49

+

+

+struct ButtonStruct ButtonCreate(double f_dXPos, double f_dYPos, double f_dWidth, char *f_pcTitle, int f_iType)

+{

+  struct ButtonStruct l_sButton;

+

+  // copy parameters

+  l_sButton.m_dXPos  = f_dXPos;

+  l_sButton.m_dYPos  = f_dYPos;

+  l_sButton.m_iType  = f_iType;

+  l_sButton.m_dWidth = f_dWidth;

+

+  // copy title

+  memcpy(l_sButton.m_pcTitle, f_pcTitle, sizeof(f_pcTitle));

+

+  switch (f_iType)

+  {

+    case BUTTON_CLICK:

+      l_sButton.m_piImgNormal[0] = BitmapLoad("img/button_click_left.bmp");

+      l_sButton.m_piImgNormal[1] = BitmapLoad("img/button_click_center.bmp");

+      l_sButton.m_piImgNormal[2] = BitmapLoad("img/button_click_right.bmp");

+

+      l_sButton.m_piImgPressed[0] = BitmapLoad("img/button_click_left_hover.bmp");

+      l_sButton.m_piImgPressed[1] = BitmapLoad("img/button_click_center_hover.bmp");

+      l_sButton.m_piImgPressed[2] = BitmapLoad("img/button_click_right_hover.bmp");

+

+      // calculate width of center image

+      l_sButton.m_dCenterWidth = f_dWidth - l_sButton.m_piImgNormal[0].m_iWidth - l_sButton.m_piImgNormal[2].m_iWidth;

+

+      // retrieve image height

+      l_sButton.m_dHeight = l_sButton.m_piImgNormal[0].m_iHeight;

+      break;

+

+    case BUTTON_RADIO:

+    case BUTTON_LABEL:

+    default:

+      break;

+  }

+

+  l_sButton.m_bPressed = FALSE;

+  l_sButton.m_bHover   = FALSE;

+

+  return l_sButton;

+

+} // ButtonCreate

+

+

 

 void ButtonClickRender(struct ButtonStruct *f_sButton)

 {

   char l_pcTitle[BUTTON_MAX_TITLE];

 

-  double l_dWidth = f_sButton->m_dWidth;

+  // copy button attributes

+  double l_dWidth = f_sButton->m_dCenterWidth;

   double l_dXPos  = f_sButton->m_dXPos;

   double l_dYPos  = f_sButton->m_dYPos;

   int    l_iType  = f_sButton->m_iType;

 

+  // copy buttom images

+  int l_iImageIdLeft   = (!f_sButton->m_bHover) ? f_sButton->m_piImgNormal[0].m_iImageId : f_sButton->m_piImgPressed[0].m_iImageId;

+  int l_iImageIdCenter = (!f_sButton->m_bHover) ? f_sButton->m_piImgNormal[1].m_iImageId : f_sButton->m_piImgPressed[1].m_iImageId;

+  int l_iImageIdRight  = (!f_sButton->m_bHover) ? f_sButton->m_piImgNormal[2].m_iImageId : f_sButton->m_piImgPressed[2].m_iImageId;

+

+  // copy button title

   memset(&l_pcTitle, 0, sizeof(l_pcTitle));

   memcpy(&l_pcTitle, f_sButton->m_pcTitle, sizeof(f_sButton->m_pcTitle));

 

-  BitmapLoad("img/button_click_left.bmp");

+  // render left side of button

+  glBindTexture(GL_TEXTURE_2D, l_iImageIdLeft);

 

   glBegin(GL_QUADS);

     glTexCoord3d(0, 1, 0); glVertex3d(l_dXPos,      l_dYPos,                       0);

     glTexCoord3d(1, 1, 0); glVertex3d(l_dXPos + 26, l_dYPos,                       0);

-    glTexCoord3d(1, 0, 0); glVertex3d(l_dXPos + 26, l_dYPos - BUTTON_CLICK_HEIGHT, 0);

-    glTexCoord3d(0, 0, 0); glVertex3d(l_dXPos,      l_dYPos - BUTTON_CLICK_HEIGHT, 0);

+    glTexCoord3d(1, 0, 0); glVertex3d(l_dXPos + 26, l_dYPos + BUTTON_CLICK_HEIGHT, 0);

+    glTexCoord3d(0, 0, 0); glVertex3d(l_dXPos,      l_dYPos + BUTTON_CLICK_HEIGHT, 0);

   glEnd();

 

-  BitmapLoad("img/button_click_right.bmp");

+  // render right side of button

+  glBindTexture(GL_TEXTURE_2D, l_iImageIdRight);

 

   glBegin(GL_QUADS);

     glTexCoord3d(0, 1, 0); glVertex3d(l_dXPos + 24 + l_dWidth,      l_dYPos,                       0);

     glTexCoord3d(1, 1, 0); glVertex3d(l_dXPos + 24 + l_dWidth + 25, l_dYPos,                       0);

-    glTexCoord3d(1, 0, 0); glVertex3d(l_dXPos + 24 + l_dWidth + 25, l_dYPos - BUTTON_CLICK_HEIGHT, 0);

-    glTexCoord3d(0, 0, 0); glVertex3d(l_dXPos + 24 + l_dWidth,      l_dYPos - BUTTON_CLICK_HEIGHT, 0);

+    glTexCoord3d(1, 0, 0); glVertex3d(l_dXPos + 24 + l_dWidth + 25, l_dYPos + BUTTON_CLICK_HEIGHT, 0);

+    glTexCoord3d(0, 0, 0); glVertex3d(l_dXPos + 24 + l_dWidth,      l_dYPos + BUTTON_CLICK_HEIGHT, 0);

   glEnd();

 

+  // render center of button

   if (l_dWidth > 0)

   {

-    BitmapLoad("img/button_click_center.bmp");

+    glBindTexture(GL_TEXTURE_2D, l_iImageIdCenter);

 

     glBegin(GL_QUADS);

       glTexCoord3d(0, 1, 0); glVertex3d(l_dXPos + 25,            l_dYPos,                       0);

       glTexCoord3d(1, 1, 0); glVertex3d(l_dXPos + 25 + l_dWidth, l_dYPos,                       0);

-      glTexCoord3d(1, 0, 0); glVertex3d(l_dXPos + 25 + l_dWidth, l_dYPos - BUTTON_CLICK_HEIGHT, 0);

-      glTexCoord3d(0, 0, 0); glVertex3d(l_dXPos + 25,            l_dYPos - BUTTON_CLICK_HEIGHT, 0);

+      glTexCoord3d(1, 0, 0); glVertex3d(l_dXPos + 25 + l_dWidth, l_dYPos + BUTTON_CLICK_HEIGHT, 0);

+      glTexCoord3d(0, 0, 0); glVertex3d(l_dXPos + 25,            l_dYPos + BUTTON_CLICK_HEIGHT, 0);

     glEnd();

   }

 

 } // ButtonClickRender

 

+

+

 void ButtonRender(struct ButtonStruct *f_sButton)

 {

   int l_iType = f_sButton->m_iType;

@@ -71,3 +130,11 @@ void ButtonRender(struct ButtonStruct *f_sButton)
   }

 

 } // ButtonRender

+

+

+

+void ButtonHover(struct ButtonStruct *f_sButton)

+{

+  f_sButton->m_bHover = TRUE;

+

+} // ButtonHover

diff --git a/menu_demo/button.h b/menu_demo/button.h
index 77d365e..3103a5d 100644
--- a/menu_demo/button.h
+++ b/menu_demo/button.h
@@ -1,14 +1,29 @@
 #ifndef _CBUTTON_H

 #define _CBUTTON_H

 

+#include "bitmap.h"

+

 #define BUTTON_MAX_TITLE 256

+#define BUTTON_MAX_IMGS  3

+#define BUTTON_CLICK_HEIGHT 49

 

 struct ButtonStruct {

-  double m_dXPos;

-  double m_dYPos;

-  double m_dWidth;

+  double m_dXPos;        // x positie

+  double m_dYPos;        // y positie

+  double m_dCenterWidth; // breedte van middenstuk

+  double m_dWidth;       // totale breedte

+  double m_dHeight;      // totale hoogte

+  int    m_bPressed;     // pressed or not

+  int    m_bHover;       // mouse hovering or not

+  int    m_iType;        // button type

+

+  // button caption/title

   char   m_pcTitle[BUTTON_MAX_TITLE];

-  int    m_iType;

+

+  // button images

+  struct ImageStruct m_piImgNormal[BUTTON_MAX_IMGS];

+  struct ImageStruct m_piImgHover[BUTTON_MAX_IMGS];

+  struct ImageStruct m_piImgPressed[BUTTON_MAX_IMGS];

 };

 

 enum ButtonType {

@@ -17,6 +32,8 @@ enum ButtonType {
   BUTTON_LABEL

 };

 

+struct ButtonStruct ButtonCreate(double f_dXPos, double f_dYPos, double f_dWidth, char *f_pcTitle, int f_iType);

 void ButtonRender(struct ButtonStruct *f_sButton);

+void ButtonHover(struct ButtonStruct *f_sButton);

 

 #endif

diff --git a/menu_demo/main.c b/menu_demo/main.c
index 89e0b31..3903002 100644
--- a/menu_demo/main.c
+++ b/menu_demo/main.c
@@ -12,23 +12,15 @@
 #define SCREEN_WIDTH  640

 #define SCREEN_HEIGHT 480

 

+

+

 void init_gl(void)

 {

-  double l_dHalfWidth  = SCREEN_WIDTH  / 2;

-  double l_dHalfHeight = SCREEN_HEIGHT / 2;

+  // do sumting

 

-  glMatrixMode(GL_PROJECTION);

+} // init_gl

 

-  glOrtho(-l_dHalfWidth,

-           l_dHalfWidth,

-          -l_dHalfHeight,

-           l_dHalfHeight,

-          -1,

-           1

-         );

 

-  glMatrixMode(GL_MODELVIEW);

-}

 

 void render_scene(void)

 {

@@ -38,13 +30,19 @@ void render_scene(void)
   MenuRender();

 

   glutSwapBuffers();

-}

+

+} // render_scene

+

+

 

 void process_normal_keys(unsigned char key, int x, int y)

 {

   // escape

   if (key == 27) exit(0);

-}

+

+} // process_normal_keys

+

+

 

 void process_special_keys(int key, int x, int y)

 {

@@ -52,7 +50,26 @@ void process_special_keys(int key, int x, int y)
   {

 	  // do sumting

   }

-}

+

+} // process_special_keys

+

+

+

+void process_mouse(int button, int state, int x, int y)

+{

+  MenuMouseHandle(button, state, x, y);

+

+} // process_mouse

+

+

+

+void process_passive_mouse(int x, int y)

+{

+  process_mouse(0, 0, x, y);

+

+} // process_passive_mouse

+

+

 

 int main(int argc, char **argv)

 {

@@ -64,6 +81,8 @@ int main(int argc, char **argv)
   glutIdleFunc(render_scene);

   glutKeyboardFunc(process_normal_keys);

   glutSpecialFunc(process_special_keys);

+  glutMouseFunc(process_mouse);

+  glutPassiveMotionFunc(process_passive_mouse);

 

   init_gl();

   MenuInit(SCREEN_WIDTH, SCREEN_HEIGHT);

@@ -71,4 +90,7 @@ int main(int argc, char **argv)
   glutMainLoop();

 

   return 0;

-}

+

+} // main

+

+

diff --git a/menu_demo/menu.c b/menu_demo/menu.c
index 265c4d8..9159d13 100644
--- a/menu_demo/menu.c
+++ b/menu_demo/menu.c
@@ -32,6 +32,22 @@ struct MenuStruct *g_pCurMenu;     // current menu
 int g_iWinWidth;

 int g_iWinHeight;

 

+

+

+void MenuAddButton(double f_dXPos, double f_dYPos, double f_dWidth, char *f_pcTitle, int f_iType)

+{

+  int i;

+  

+  i = g_sMenuMain.m_iButtonCount;

+  g_sMenuMain.m_sButtons[i] = ButtonCreate(f_dXPos, f_dYPos, f_dWidth, f_pcTitle, f_iType);

+

+  i++;

+  g_sMenuMain.m_iButtonCount = i;

+

+} // MenuAddButton

+

+

+

 void MenuInit(int f_iWinWidth, int f_iWinHeight)

 {

   // init menu props

@@ -40,12 +56,7 @@ void MenuInit(int f_iWinWidth, int f_iWinHeight)
 

   // init main menu

   g_sMenuMain.m_eMenuId = MENU_MAIN;

-  g_sMenuMain.m_sButtons[0].m_dWidth = 200;

-  g_sMenuMain.m_sButtons[0].m_dXPos  = 0;

-  g_sMenuMain.m_sButtons[0].m_dYPos  = 0;

-  g_sMenuMain.m_sButtons[0].m_iType  = BUTTON_CLICK;

-

-  g_sMenuMain.m_iButtonCount = 1;

+  MenuAddButton(0, 0, 200, "Start", BUTTON_CLICK);

 

   // init start menu

   g_sMenuStart.m_eMenuId = MENU_START;

@@ -58,7 +69,9 @@ void MenuInit(int f_iWinWidth, int f_iWinHeight)
   // set pointer to the current menu

   g_pCurMenu = &g_sMenuMain;

 

-} // InitMenu

+} // MenuInit

+

+

 

 void MenuRender(void)

 {

@@ -67,16 +80,66 @@ void MenuRender(void)
   glDisable(GL_DEPTH_TEST);

   glEnable(GL_TEXTURE_2D);

 

-  glColor3d(1, 1, 1);

-

-  glPushMatrix();

-

+  glColor3d(1, 1, 1);
+
+  glMatrixMode(GL_PROJECTION);
+  glPushMatrix();
+
+    glLoadIdentity();
+    glOrtho(0, (GLfloat)g_iWinWidth, (GLfloat)g_iWinHeight, 0, 0, 1);
+    glMatrixMode(GL_MODELVIEW);
+
+    // render the buttons on the current menu
     while (i < g_pCurMenu->m_iButtonCount)

     {

       ButtonRender(&g_pCurMenu->m_sButtons[i]);

       i++;

+    }
+
+    //restore the previous projection matrix
+    glMatrixMode(GL_PROJECTION);
+
+  glPopMatrix();
+  glMatrixMode(GL_MODELVIEW);

+

+} // MenuRender

+

+

+

+void MenuMouseHandle(int f_iGlutButton, int f_iGlutState, int f_iXPos, int f_iYPos)

+{

+  int i = 0;

+  double l_dXPos, l_dYPos;

+  double l_iWidth, l_iHeight;

+

+  // f_iGlutButton:

+  // # GLUT_LEFT_BUTTON

+  // # GLUT_MIDDLE_BUTTON

+  // # GLUT_RIGHT_BUTTON

+

+  // f_iGlutState

+  // # GLUT_DOWN

+  // # GLUT_UP

+
+  // check if any button needs attention from the mouse
+  while (i < g_pCurMenu->m_iButtonCount)

+  {

+    l_dXPos   = g_pCurMenu->m_sButtons[i].m_dXPos;

+    l_dYPos   = g_pCurMenu->m_sButtons[i].m_dYPos;

+    l_iWidth  = g_pCurMenu->m_sButtons[i].m_dWidth;

+    l_iHeight = g_pCurMenu->m_sButtons[i].m_dHeight;

+

+    if (l_dXPos <= f_iXPos && l_dXPos + l_iWidth >= f_iXPos &&l_dYPos <= f_iYPos && l_dYPos + l_iHeight >= f_iYPos)

+    {

+      ButtonHover(&g_pCurMenu->m_sButtons[i]);

     }

+    else

+    {

+      g_pCurMenu->m_sButtons[i].m_bHover = FALSE;

+    }

+    i++;

+  }

+

+} // MenuMouseHandle

 

-  glPopMatrix();

 

-} // Render

diff --git a/menu_demo/menu.h b/menu_demo/menu.h
index b574b74..b89c1aa 100644
--- a/menu_demo/menu.h
+++ b/menu_demo/menu.h
@@ -3,5 +3,6 @@
 

 void MenuInit(int f_iWinWidth, int f_iWinHeight);

 void MenuRender(void);

+void MenuMouseHandle(int button, int state, int x, int y);

 

 #endif

diff --git a/menu_demo/menu_demo.suo b/menu_demo/menu_demo.suo
index debaa58..31ed2a0 100644
--- a/menu_demo/menu_demo.suo
+++ b/menu_demo/menu_demo.suo