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#ifdef G_OS_WIN32
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#endif
#include <GL/gl.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include "button.h"
struct ButtonStruct ButtonCreate(int f_dXPos, int f_dYPos, int f_dWidth, int f_dHeight, 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_dHeight = f_dHeight;
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_piImgHover[0] = BitmapLoad("img/button_click_left_hover.bmp");
l_sButton.m_piImgHover[1] = BitmapLoad("img/button_click_center_hover.bmp");
l_sButton.m_piImgHover[2] = BitmapLoad("img/button_click_right_hover.bmp");
BitmapConvertWidth(&l_sButton.m_piImgNormal[0], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgNormal[1], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgNormal[2], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgHover[0], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgHover[1], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgHover[2], f_dHeight);
// calculate (center)width of image
l_sButton.m_dCenterWidth = max(f_dWidth - l_sButton.m_piImgNormal[0].m_iWidth - l_sButton.m_piImgNormal[2].m_iWidth, 0);
l_sButton.m_dWidth = l_sButton.m_dCenterWidth + l_sButton.m_piImgNormal[0].m_iWidth + l_sButton.m_piImgNormal[2].m_iWidth;
break;
case BUTTON_RADIO:
l_sButton.m_piImgNormal[0] = BitmapLoad("img/button_radio.bmp");
l_sButton.m_piImgHover[0] = BitmapLoad("img/button_radio_hover.bmp");
l_sButton.m_piImgPressed[0] = BitmapLoad("img/button_radio_pressed.bmp");
BitmapConvertWidth(&l_sButton.m_piImgNormal[0], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgHover[0], f_dHeight);
BitmapConvertWidth(&l_sButton.m_piImgPressed[0], f_dHeight);
l_sButton.m_dCenterWidth = 0;
l_sButton.m_dHeight = f_dHeight;
l_sButton.m_dWidth = f_dWidth;
break;
case BUTTON_LABEL:
default:
break;
}
l_sButton.m_bPressed = FALSE;
l_sButton.m_bHover = FALSE;
return l_sButton;
} // ButtonCreate
int ButtonGetType(struct ButtonStruct *f_sButton)
{
return f_sButton->m_iType;
} // ButtonGetType
void ButtonClickRender(struct ButtonStruct *f_sButton)
{
char l_pcTitle[BUTTON_MAX_TITLE];
struct BitmapStruct *l_sImgButton;
int l_iImgWidth, l_iImageIdLeft, l_iImageIdCenter, l_iImageIdRight;
double l_dXOffset, l_dYOffset;
double l_dYCoordTop = 1;
double l_dYCoordBot = 0;
// copy button attributes
double l_dCnWdt = f_sButton->m_dCenterWidth;
double l_dHeight = f_sButton->m_dHeight;
double l_dXPos = f_sButton->m_dXPos;
double l_dYPos = f_sButton->m_dYPos;
if (f_sButton->m_bPressed) {
//l_dYCoordBot += l_dYCoordTop;
//l_dYCoordTop -= l_dYCoordTop;
glColor3d(0.8, 0.9, 1);
}
else {
glColor3d(1, 1, 1);
}
// get the right image struct
if (f_sButton->m_bHover) {
l_sImgButton = f_sButton->m_piImgHover;
}
else {
l_sImgButton = f_sButton->m_piImgNormal;
}
// copy buttom images
l_iImageIdLeft = l_sImgButton[0].m_iImageId;
l_iImageIdCenter = l_sImgButton[1].m_iImageId;
l_iImageIdRight = l_sImgButton[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));
// render left side of button
glBindTexture(GL_TEXTURE_2D, l_iImageIdLeft);
l_iImgWidth = l_sImgButton[0].m_iWidth;
l_dXOffset = l_dXPos;
l_dYOffset = l_dYPos;
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2d(0, l_dYCoordTop); glVertex3d(l_dXOffset + 1, l_dYOffset, 0);
glTexCoord2d(1, l_dYCoordTop); glVertex3d(l_dXOffset + l_iImgWidth, l_dYOffset, 0);
glTexCoord2d(0, l_dYCoordBot); glVertex3d(l_dXOffset + 1, l_dYOffset + l_dHeight, 0);
glTexCoord2d(1, l_dYCoordBot); glVertex3d(l_dXOffset + l_iImgWidth, l_dYOffset + l_dHeight, 0);
glEnd();
l_dXOffset = l_dXPos + l_iImgWidth + l_dCnWdt;
// render right side of button
glBindTexture(GL_TEXTURE_2D, l_iImageIdRight);
l_iImgWidth = l_sImgButton[2].m_iWidth;
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2d(0, l_dYCoordTop); glVertex3d(l_dXOffset - 1, l_dYOffset, 0);
glTexCoord2d(1, l_dYCoordTop); glVertex3d(l_dXOffset + l_iImgWidth, l_dYOffset, 0);
glTexCoord2d(0, l_dYCoordBot); glVertex3d(l_dXOffset - 1, l_dYOffset + l_dHeight, 0);
glTexCoord2d(1, l_dYCoordBot); glVertex3d(l_dXOffset + l_iImgWidth, l_dYOffset + l_dHeight, 0);
glEnd();
l_dXOffset = l_dXOffset - l_dCnWdt;
// render center of button
if (l_dCnWdt > 0)
{
glBindTexture(GL_TEXTURE_2D, l_iImageIdCenter);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2d(0, l_dYCoordTop); glVertex3d(l_dXOffset - 1, l_dYOffset, 0);
glTexCoord2d(1, l_dYCoordTop); glVertex3d(l_dXOffset + l_dCnWdt, l_dYOffset, 0);
glTexCoord2d(0, l_dYCoordBot); glVertex3d(l_dXOffset - 1, l_dYOffset + l_dHeight, 0);
glTexCoord2d(1, l_dYCoordBot); glVertex3d(l_dXOffset + l_dCnWdt, l_dYOffset + l_dHeight, 0);
glEnd();
}
if (f_sButton->m_bPressed)
{
glColor3d(1, 1, 1);
}
} // ButtonClickRender
void ButtonRadioRender(struct ButtonStruct *f_sButton)
{
struct BitmapStruct *l_sImgButton;
int l_iImageId;
// copy button attributes
double l_dWidth = f_sButton->m_dWidth;
double l_dHeight = f_sButton->m_dHeight;
double l_dXPos = f_sButton->m_dXPos;
double l_dYPos = f_sButton->m_dYPos;
// get the right image struct
if (f_sButton->m_bHover)
{
l_sImgButton = f_sButton->m_piImgHover;
}
else
{
l_sImgButton = f_sButton->m_piImgNormal;
}
// copy buttom images
l_iImageId = l_sImgButton[0].m_iImageId;
// render left side of button
glBindTexture(GL_TEXTURE_2D, l_iImageId);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2d(0, 1); glVertex3d(l_dXPos, l_dYPos, 0);
glTexCoord2d(1, 1); glVertex3d(l_dXPos + l_dWidth, l_dYPos, 0);
glTexCoord2d(0, 0); glVertex3d(l_dXPos, l_dYPos + l_dHeight, 0);
glTexCoord2d(1, 0); glVertex3d(l_dXPos + l_dWidth, l_dYPos + l_dHeight, 0);
glEnd();
if (f_sButton->m_bPressed)
{
l_iImageId = f_sButton->m_piImgPressed[0].m_iImageId;
glBindTexture(GL_TEXTURE_2D, l_iImageId);
glBegin(GL_TRIANGLE_STRIP);
glTexCoord2d(0, 1); glVertex3d(l_dXPos, l_dYPos, 0);
glTexCoord2d(1, 1); glVertex3d(l_dXPos + l_dWidth, l_dYPos, 0);
glTexCoord2d(0, 0); glVertex3d(l_dXPos, l_dYPos + l_dHeight, 0);
glTexCoord2d(1, 0); glVertex3d(l_dXPos + l_dWidth, l_dYPos + l_dHeight, 0);
glEnd();
}
} // ButtonRadioRender
void ButtonRender(struct ButtonStruct *f_sButton)
{
int l_iType = f_sButton->m_iType;
switch (l_iType)
{
case BUTTON_CLICK:
ButtonClickRender(f_sButton);
break;
case BUTTON_RADIO:
ButtonRadioRender(f_sButton);
break;
case BUTTON_LABEL:
default:
break;
}
} // ButtonRender
void ButtonEnter(struct ButtonStruct *f_sButton)
{
f_sButton->m_bHover = TRUE;
} // ButtonHover
void ButtonExit(struct ButtonStruct *f_sButton)
{
f_sButton->m_bHover = FALSE;
} // ButtonHover
void ButtonPress(struct ButtonStruct *f_sButton)
{
f_sButton->m_bPressed = !f_sButton->m_bPressed;
} // ButtonPress
void ButtonRelease(struct ButtonStruct *f_sButton)
{
f_sButton->m_bPressed = FALSE;
} // ButtonPress
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