Category : C Source Code
Archive : TOOLBAR.ZIP
Filename : TOOLBAR.C
Output of file : TOOLBAR.C contained in archive : TOOLBAR.ZIP
/* Copyright (C) Stephen Chung, 1991. */
/* All rights reserved. */
#include
#include "toolbar.h"
#define MAXSTATES 3
static BOOL ClassRegistered = FALSE;
static BOOL Capturing = FALSE;
long FAR PASCAL ToolbarProc (HWND, WORD, WORD, LONG);
long FAR PASCAL ToolbarButtonProc (HWND, WORD, WORD, LONG);
void Create3DEffect (HDC hdc, RECT *rect, int thickness)
{
int i;
int x1 = rect->left;
int y1 = rect->top;
int x2 = rect->right;
int y2 = rect->bottom;
HBRUSH hbrush;
HPEN hpen;
SelectObject(hdc, GetStockObject(BLACK_PEN));
hbrush = CreateSolidBrush(RGB(192, 192, 192));
SelectObject(hdc, hbrush);
Rectangle(hdc, x1, y1, x2, y2);
SelectObject(hdc, GetStockObject(WHITE_PEN));
for (i = 1; i <= thickness; i++) {
MoveTo(hdc, x1 + i, y1 + i); LineTo(hdc, x1 + i, y2 - 1);
MoveTo(hdc, x1 + i, y1 + i); LineTo(hdc, x2 - 1, y1 + i);
}
hpen = CreatePen(PS_SOLID, 1, RGB(128,128,128));
SelectObject(hdc, hpen);
for (i = 1; i <= thickness; i++) {
MoveTo(hdc, x1 + i, y2 - 1 - i);
LineTo(hdc, x2 - 1, y2 - 1 - i);
MoveTo(hdc, x2 - 1 - i, y2 - 2);
LineTo(hdc, x2 - 1 - i, y1 + i);
}
DeleteObject(hbrush);
DeleteObject(hpen);
}
void EnableToolbarButton (HWND hwnd, int id, BOOL enabled)
{
int i, n;
TOOLBARICON *icons;
icons = (TOOLBARICON *) GetWindowWord(hwnd, 0);
n = (int) GetWindowWord(hwnd, sizeof(WORD));
for (i = 0; i < n && icons[i].id != id; i++);
if (i >= n) return;
if (enabled) {
if (icons[i].state >= 0) return;
icons[i].state = icons[i].oldstate;
} else {
if (icons[i].state < 0) return;
icons[i].oldstate = icons[i].state;
icons[i].state = -1;
}
InvalidateRect(icons[i].hwnd, NULL, TRUE);
UpdateWindow(icons[i].hwnd);
}
HWND GetToolbarButton (HWND hwnd, int id, TOOLBARICON *ip)
{
int i, n;
TOOLBARICON *icons;
icons = (TOOLBARICON *) GetWindowWord(hwnd, 0);
n = (int) GetWindowWord(hwnd, sizeof(WORD));
for (i = 0; i < n && icons[i].id != id; i++);
if (i >= n) return (NULL);
if (ip != NULL) *ip = icons[i];
return (icons[i].hwnd);
}
void ModifyToolbarButton (HWND hwnd, TOOLBARICON *icon)
{
TOOLBARICON *old;
old = (TOOLBARICON *) GetWindowWord(hwnd, 0);
old->id = icon->id;
old->x = icon->x;
old->y = icon->y;
old->width = icon->width;
old->height = icon->height;
old->state = icon->state;
old->cycle = icon->cycle;
old->disabled = icon->disabled;
old->undepressed = icon->undepressed;
old->depressed = icon->depressed;
old->grayed = icon->grayed;
old->pressing = icon->pressing;
InvalidateRect(hwnd, NULL, TRUE);
UpdateWindow(hwnd);
}
HWND CreateToolbar (HWND parent, int x, int y, int width, int height,
int thickness, int id, int n, HANDLE hInstance,
TOOLBARICON *icons, char *xcursor)
{
int i;
HWND hwnd;
WNDCLASS wndclass;
if (!ClassRegistered) {
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = ToolbarProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 4 * sizeof(WORD);
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = COLOR_BTNFACE + 1;
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = TOOLBARCLASS;
RegisterClass(&wndclass);
wndclass.cbWndExtra = sizeof(WORD);
wndclass.lpfnWndProc = ToolbarButtonProc;
wndclass.lpszClassName = TOOLBARBUTTONCLASS;
RegisterClass(&wndclass);
}
hwnd = CreateWindow(TOOLBARCLASS, "", WS_CHILD | WS_VISIBLE,
x, y, width, height, parent, id, hInstance, NULL);
SetWindowWord(hwnd, 0, (WORD) icons);
SetWindowWord(hwnd, sizeof(WORD), (WORD) n);
SetWindowWord(hwnd, 2 * sizeof(WORD), (WORD) thickness);
if (xcursor != NULL) {
SetWindowWord(hwnd, 3 * sizeof(WORD), LoadCursor(hInstance, xcursor));
} else {
SetWindowWord(hwnd, 3 * sizeof(WORD), NULL);
}
ShowWindow(hwnd, SW_SHOW);
UpdateWindow(hwnd);
/* Create the children */
for (i = 0; i < n; i++) {
icons[i].hwnd = CreateWindow(TOOLBARBUTTONCLASS, "",
WS_CHILD | WS_VISIBLE,
icons[i].x, icons[i].y,
icons[i].width, icons[i].height,
hwnd, icons[i].id, hInstance, NULL);
SetWindowWord(icons[i].hwnd, 0, (WORD) &(icons[i]));
ShowWindow(icons[i].hwnd, SW_SHOW);
UpdateWindow(hwnd);
}
return (hwnd);
}
long FAR PASCAL ToolbarProc (HWND hwnd, WORD message, WORD wParam, LONG lParam)
{
int i;
HDC hdc;
PAINTSTRUCT ps;
HWND child;
RECT rect;
TOOLBARICON *icons;
switch (message) {
case WM_PAINT:
GetClientRect(hwnd, &rect);
hdc = BeginPaint(hwnd, &ps);
Create3DEffect(hdc, &rect, GetWindowWord(hwnd, 2 * sizeof(WORD)));
EndPaint(hwnd, &ps);
return (0);
case WM_COMMAND:
SendMessage(GetParent(hwnd), WM_COMMAND,
(wParam << 8) | GetWindowWord(hwnd, GWW_ID), lParam);
return (0);
case BM_SETSTATE:
case BM_GETSTATE:
icons = (TOOLBARICON *) GetWindowWord(hwnd, 0);
for (i = 0; icons[i].id != LOWORD(lParam); i++);
return (SendMessage(icons[i].hwnd, message, wParam, 0L));
}
return (DefWindowProc(hwnd, message, wParam, lParam));
}
long FAR PASCAL ToolbarButtonProc (HWND hwnd, WORD message, WORD wParam, LONG lParam)
{
int i, j;
BOOL crossed;
HDC hdc, hdcmem;
PAINTSTRUCT ps;
HPEN hpen;
HWND child;
TOOLBARICON *icon;
HBITMAP hbitmap;
HANDLE hInstance;
HCURSOR hcursor;
icon = (TOOLBARICON *) GetWindowWord(hwnd, 0);
if (icon->state < 0) {
hcursor = (HCURSOR) GetWindowWord(GetParent(hwnd), 3 * sizeof(WORD));
if (hcursor != NULL) SetCursor(hcursor);
}
switch (message) {
case BM_SETSTATE:
if (icon->state == wParam) return (0);
icon->oldstate = icon->state = wParam;
InvalidateRect(hwnd, NULL, TRUE);
UpdateWindow(hwnd);
return (0);
case BM_GETSTATE:
return (icon->state);
case WM_LBUTTONDOWN:
if (icon->state < 0) return (0);
icon->oldstate = icon->state;
icon->state = MAXSTATES;
InvalidateRect(hwnd, NULL, TRUE);
UpdateWindow(hwnd);
SetCapture(hwnd);
Capturing = TRUE;
return (0);
case WM_LBUTTONUP:
if (!Capturing || icon->state < 0) return (0);
ReleaseCapture();
Capturing = FALSE;
i = LOWORD(lParam);
j = HIWORD(lParam);
if (i < 0 || i >= icon->width || j < 0 || j >= icon->height) {
return (0);
} else if (icon->cycle <= 0) {
icon->state = icon->oldstate;
} else {
icon->oldstate++;
if (icon->oldstate >= icon->cycle) icon->oldstate = 0;
icon->state = icon->oldstate;
}
InvalidateRect(hwnd, NULL, TRUE);
UpdateWindow(hwnd);
SendMessage(GetParent(hwnd), WM_COMMAND, icon->id, ((LONG) BN_CLICKED << 16) | hwnd);
return (0);
case WM_MOUSEMOVE:
if (!Capturing || icon->state < 0) return (0);
i = LOWORD(lParam);
j = HIWORD(lParam);
if (i < 0 || i >= icon->width || j < 0 || j >= icon->height) {
crossed = (icon->state == MAXSTATES);
icon->state = icon->oldstate;
} else {
crossed = (icon->state != MAXSTATES);
icon->state = MAXSTATES;
}
if (crossed) {
InvalidateRect(hwnd, NULL, TRUE);
UpdateWindow(hwnd);
}
return (0);
case WM_PAINT:
hInstance = GetWindowWord(hwnd, GWW_HINSTANCE);
hdc = BeginPaint(hwnd, &ps);
switch (icon->state) {
default: if (icon->disabled != NULL) {
hbitmap = LoadBitmap(hInstance, icon->disabled);
}
break;
case 0: hbitmap = LoadBitmap(hInstance, icon->undepressed); break;
case 1: hbitmap = LoadBitmap(hInstance, icon->depressed); break;
case 2: hbitmap = LoadBitmap(hInstance, icon->grayed); break;
case MAXSTATES:
hbitmap = LoadBitmap(hInstance, icon->pressing); break;
}
hdcmem = CreateCompatibleDC(hdc);
SelectObject(hdcmem, hbitmap);
BitBlt(hdc, 0, 0, icon->width, icon->height, hdcmem, 0, 0, SRCCOPY);
DeleteDC(hdcmem);
DeleteObject(hbitmap);
EndPaint(hwnd, &ps);
return (0);
}
return (DefWindowProc(hwnd, message, wParam, lParam));
}
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