OpenTTD-patches/widget.c
bjarni 518034d28d (svn r1679) Fix: dropdown menus now returns the index of the string that was clicked even if a previous item is hidden
This bug was not triggered by the current code, but it's easier to code new features if you do not have to think about such limitations 
like you can't hide an item in the middle of the list ;)
2005-01-26 11:23:54 +00:00

649 lines
18 KiB
C

#include "stdafx.h"
#include "ttd.h"
#include "table/strings.h"
#include "window.h"
#include "gfx.h"
#include "viewport.h"
static Point HandleScrollbarHittest(Scrollbar *sb, int top, int bottom)
{
Point pt;
int height, count, pos, cap;
top += 10;
bottom -= 9;
height = (bottom - top);
pos = sb->pos;
count = sb->count;
cap = sb->cap;
if (count != 0) top += height * pos / count;
if (cap > count) cap = count;
if (count != 0)
bottom -= (count - pos - cap) * height / count;
pt.x = top;
pt.y = bottom - 1;
return pt;
}
/*****************************************************
* Special handling for the scrollbar widget type.
* Handles the special scrolling buttons and other
* scrolling.
* Parameters:
* w - Window.
* wi - Pointer to the scrollbar widget.
* x - The X coordinate of the mouse click.
* y - The Y coordinate of the mouse click.
*/
void ScrollbarClickHandler(Window *w, const Widget *wi, int x, int y)
{
int mi, ma, pos;
Scrollbar *sb;
switch (wi->type) {
case WWT_SCROLLBAR: {
// vertical scroller
w->flags4 &= ~WF_HSCROLL;
w->flags4 &= ~WF_SCROLL2;
mi = wi->top;
ma = wi->bottom;
pos = y;
sb = &w->vscroll;
break;
}
case WWT_SCROLL2BAR: {
// 2nd vertical scroller
w->flags4 &= ~WF_HSCROLL;
w->flags4 |= WF_SCROLL2;
mi = wi->top;
ma = wi->bottom;
pos = y;
sb = &w->vscroll2;
break;
}
case WWT_HSCROLLBAR: {
// horizontal scroller
w->flags4 &= ~WF_SCROLL2;
w->flags4 |= WF_HSCROLL;
mi = wi->left;
ma = wi->right;
pos = x;
sb = &w->hscroll;
break;
}
default: return; //this should never happen
}
if (pos <= mi+9) {
// Pressing the upper button?
if (!_demo_mode) {
w->flags4 |= WF_SCROLL_UP;
if (_scroller_click_timeout == 0) {
_scroller_click_timeout = 6;
if (sb->pos != 0) sb->pos--;
}
_left_button_clicked = false;
}
} else if (pos >= ma-10) {
// Pressing the lower button?
if (!_demo_mode) {
w->flags4 |= WF_SCROLL_DOWN;
if (_scroller_click_timeout == 0) {
_scroller_click_timeout = 6;
if ((byte)(sb->pos + sb->cap) < sb->count)
sb->pos++;
}
_left_button_clicked = false;
}
} else {
//
Point pt = HandleScrollbarHittest(sb, mi, ma);
if (pos < pt.x) {
sb->pos = max(sb->pos - sb->cap, 0);
} else if (pos > pt.y) {
sb->pos = min(
sb->pos + sb->cap,
max(sb->count - sb->cap, 0)
);
} else {
_scrollbar_start_pos = pt.x - mi - 9;
_scrollbar_size = ma - mi - 23;
w->flags4 |= WF_SCROLL_MIDDLE;
_scrolling_scrollbar = true;
_cursorpos_drag_start = _cursor.pos;
}
}
SetWindowDirty(w);
}
/*****************************************************
* Returns the index for the widget located at the given
* position relative to the window.
* Parameters:
* w - Window
* x/y - Window client coordinates
* Returns:
* A widget index, or -1 if no widget was found.
*/
int GetWidgetFromPos(Window *w, int x, int y)
{
const Widget *wi;
int index, found_index = -1;
// Go through the widgets and check if we find the widget that the coordinate is
// inside.
for(index=0,wi=w->widget; wi->type != WWT_LAST; index++, wi++) {
if (wi->type == WWT_EMPTY || wi->type == WWT_FRAME)
continue;
if (x >= wi->left &&
x < wi->right &&
y >= wi->top &&
y < wi->bottom && !HASBIT(w->hidden_state,index)) {
found_index = index;
}
}
// Return the index
return found_index;
}
void DrawWindowWidgets(Window *w)
{
const Widget *wi;
DrawPixelInfo *dpi = _cur_dpi;
Rect r;
uint32 dparam_backup[20];
uint32 cur_click, cur_disabled, cur_hidden;
if (w->desc_flags & WDF_RESTORE_DPARAM) COPY_OUT_DPARAM(dparam_backup, 0, lengthof(dparam_backup));
wi = w->widget;
cur_click = w->click_state;
cur_disabled = w->disabled_state;
cur_hidden = w->hidden_state;
do {
if (dpi->left > (r.right=/*w->left + */wi->right) ||
dpi->left + dpi->width <= (r.left=wi->left/* + w->left*/) ||
dpi->top > (r.bottom=/*w->top +*/ wi->bottom) ||
dpi->top + dpi->height <= (r.top = /*w->top +*/ wi->top) ||
(cur_hidden&1))
continue;
switch(wi->type&WWT_MASK) {
case WWT_PANEL:
case WWT_PANEL_2: {
int img;
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color,
(cur_click & 1) ? 0x20 : 0);
if ((img=wi->unkA) != 0) {
if ((wi->type&WWT_MASK) == WWT_PANEL_2 && (cur_click&1)) img++;
DrawSprite(img, r.left+1, r.top+1);
}
goto draw_default;
}
case WWT_CLOSEBOX:
case WWT_4: {
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color,
(cur_click & 1) ? 0x20 : 0);
}
/* fall through */
case WWT_5: {
StringID str = wi->unkA;
if ((wi->type&WWT_MASK) == WWT_4 && (cur_click&1)) str++;
DrawStringCentered((r.left + r.right+1)>>1, ((r.top+r.bottom + 1)>>1) - 5, str, 0);
goto restore_dparam;
}
case WWT_6: {
StringID str;
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, 0x60);
if ((str = wi->unkA) != 0) {
DrawString(r.left+2, r.top+1, str, 0);
goto restore_dparam;
}
goto draw_default;
}
case WWT_MATRIX: {
int c, d, ctr;
int x, amt1, amt2;
int color;
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color,
(cur_click & 1) ? 0x20 : 0);
c = (wi->unkA&0xFF);
amt1 = (wi->right - wi->left + 1) / c;
d = (wi->unkA >> 8);
amt2 = (wi->bottom - wi->top + 1) / d;
color = _color_list[wi->color&0xF].window_color_bgb;
x = r.left;
for(ctr=c; --ctr; ) {
x += amt1;
GfxFillRect(x, r.top+1, x, r.bottom-1, color);
}
x = r.top;
for(ctr=d; --ctr; ) {
x += amt2;
GfxFillRect(r.left+1, x, r.right-1, x, color);
}
color = _color_list[wi->color&0xF].window_color_1b;
x = r.left-1;
for(ctr=c; --ctr; ) {
x += amt1;
GfxFillRect(x, r.top+1, x, r.bottom-1, color);
}
x = r.top-1;
for(ctr=d; --ctr; ) {
x += amt2;
GfxFillRect(r.left+1, x, r.right-1, x, color);
}
goto draw_default;
}
// vertical scrollbar
case WWT_SCROLLBAR: {
Point pt;
int c1,c2;
assert(r.right - r.left == 11); // XXX - to ensure the same sizes are used everywhere!
// draw up/down buttons
DrawFrameRect(r.left, r.top, r.right, r.top+9, wi->color, (w->flags4 & (WF_SCROLL_UP | WF_HSCROLL | WF_SCROLL2)) == WF_SCROLL_UP ? 0x20 : 0);
DrawFrameRect(r.left, r.bottom-9, r.right, r.bottom, wi->color, (w->flags4 & (WF_SCROLL_DOWN | WF_HSCROLL | WF_SCROLL2)) == WF_SCROLL_DOWN ? 0x20 : 0);
// draw icons in up/down buttons
DoDrawString("\xA0", r.left+2, r.top, 0x10);
DoDrawString("\xAA", r.left+2, r.bottom-9, 0x10);
c1 = _color_list[wi->color&0xF].window_color_1a;
c2 = _color_list[wi->color&0xF].window_color_2;
// draw "shaded" background
GfxFillRect(r.left, r.top+10, r.right, r.bottom-10, c2);
GfxFillRect(r.left, r.top+10, r.right, r.bottom-10, c1 | 0x8000);
// draw shaded lines
GfxFillRect(r.left+2, r.top+10, r.left+2, r.bottom-10, c1);
GfxFillRect(r.left+3, r.top+10, r.left+3, r.bottom-10, c2);
GfxFillRect(r.left+7, r.top+10, r.left+7, r.bottom-10, c1);
GfxFillRect(r.left+8, r.top+10, r.left+8, r.bottom-10, c2);
pt = HandleScrollbarHittest(&w->vscroll, r.top, r.bottom);
DrawFrameRect(r.left, pt.x, r.right, pt.y, wi->color, (w->flags4 & (WF_SCROLL_MIDDLE | WF_HSCROLL | WF_SCROLL2)) == WF_SCROLL_MIDDLE ? 0x20 : 0);
break;
}
case WWT_SCROLL2BAR: {
Point pt;
int c1,c2;
assert(r.right - r.left == 11); // XXX - to ensure the same sizes are used everywhere!
// draw up/down buttons
DrawFrameRect(r.left, r.top, r.right, r.top+9, wi->color, (w->flags4 & (WF_SCROLL_UP | WF_HSCROLL | WF_SCROLL2)) == (WF_SCROLL_UP | WF_SCROLL2) ? 0x20 : 0);
DrawFrameRect(r.left, r.bottom-9, r.right, r.bottom, wi->color, (w->flags4 & (WF_SCROLL_DOWN | WF_HSCROLL | WF_SCROLL2)) == (WF_SCROLL_DOWN | WF_SCROLL2) ? 0x20 : 0);
// draw icons in up/down buttons
DoDrawString("\xA0", r.left+2, r.top, 0x10);
DoDrawString("\xAA", r.left+2, r.bottom-9, 0x10);
c1 = _color_list[wi->color&0xF].window_color_1a;
c2 = _color_list[wi->color&0xF].window_color_2;
// draw "shaded" background
GfxFillRect(r.left, r.top+10, r.right, r.bottom-10, c2);
GfxFillRect(r.left, r.top+10, r.right, r.bottom-10, c1 | 0x8000);
// draw shaded lines
GfxFillRect(r.left+2, r.top+10, r.left+2, r.bottom-10, c1);
GfxFillRect(r.left+3, r.top+10, r.left+3, r.bottom-10, c2);
GfxFillRect(r.left+7, r.top+10, r.left+7, r.bottom-10, c1);
GfxFillRect(r.left+8, r.top+10, r.left+8, r.bottom-10, c2);
pt = HandleScrollbarHittest(&w->vscroll2, r.top, r.bottom);
DrawFrameRect(r.left, pt.x, r.right, pt.y, wi->color, (w->flags4 & (WF_SCROLL_MIDDLE | WF_HSCROLL | WF_SCROLL2)) == (WF_SCROLL_MIDDLE | WF_SCROLL2) ? 0x20 : 0);
break;
}
// horizontal scrollbar
case WWT_HSCROLLBAR: {
Point pt;
int c1,c2;
assert(r.bottom - r.top == 11); // XXX - to ensure the same sizes are used everywhere!
DrawFrameRect(r.left, r.top, r.left + 9, r.bottom, wi->color, (w->flags4 & (WF_SCROLL_UP | WF_HSCROLL)) == (WF_SCROLL_UP | WF_HSCROLL) ? 0x20 : 0);
DrawFrameRect(r.right-9, r.top, r.right, r.bottom, wi->color, (w->flags4 & (WF_SCROLL_DOWN | WF_HSCROLL)) == (WF_SCROLL_DOWN | WF_HSCROLL) ? 0x20 : 0);
// draw icons in up/down buttons
DrawSprite(SPR_ARROW_LEFT, r.left + 3, r.top + 2);
DrawSprite(SPR_ARROW_RIGHT, r.right - 6, r.top + 2);
c1 = _color_list[wi->color&0xF].window_color_1a;
c2 = _color_list[wi->color&0xF].window_color_2;
// draw "shaded" background
GfxFillRect(r.left+10, r.top, r.right-10, r.bottom, c2);
GfxFillRect(r.left+10, r.top, r.right-10, r.bottom, c1 | 0x8000);
// draw shaded lines
GfxFillRect(r.left+10, r.top+2, r.right-10, r.top+2, c1);
GfxFillRect(r.left+10, r.top+3, r.right-10, r.top+3, c2);
GfxFillRect(r.left+10, r.top+7, r.right-10, r.top+7, c1);
GfxFillRect(r.left+10, r.top+8, r.right-10, r.top+8, c2);
// draw actual scrollbar
pt = HandleScrollbarHittest(&w->hscroll, r.left, r.right);
DrawFrameRect(pt.x, r.top, pt.y, r.bottom, wi->color, (w->flags4 & (WF_SCROLL_MIDDLE | WF_HSCROLL)) == (WF_SCROLL_MIDDLE | WF_HSCROLL) ? 0x20 : 0);
break;
}
case WWT_FRAME: {
int c1,c2;
int x2 = r.left; // by default the left side is the left side of the widget
if (wi->unkA != 0) {
x2 = DrawString(r.left+6, r.top, wi->unkA, 0);
}
c1 = _color_list[wi->color].window_color_1a;
c2 = _color_list[wi->color].window_color_2;
//Line from upper left corner to start of text
GfxFillRect(r.left, r.top+4, r.left+4,r.top+4, c1);
GfxFillRect(r.left+1, r.top+5, r.left+4,r.top+5, c2);
// Line from end of text to upper right corner
GfxFillRect(x2, r.top+4, r.right-1,r.top+4,c1);
GfxFillRect(x2, r.top+5, r.right-2,r.top+5,c2);
// Line from upper left corner to bottom left corner
GfxFillRect(r.left, r.top+5, r.left, r.bottom-1, c1);
GfxFillRect(r.left+1, r.top+6, r.left+1, r.bottom-2, c2);
//Line from upper right corner to bottom right corner
GfxFillRect(r.right-1, r.top+5, r.right-1, r.bottom-2, c1);
GfxFillRect(r.right, r.top+4, r.right, r.bottom-1, c2);
GfxFillRect(r.left+1, r.bottom-1, r.right-1, r.bottom-1, c1);
GfxFillRect(r.left, r.bottom, r.right, r.bottom, c2);
goto restore_dparam;
}
case WWT_STICKYBOX: {
assert(r.right - r.left == 11); // XXX - to ensure the same sizes are used everywhere!
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (cur_click & 1) ? 0x20 : 0);
DrawSprite((cur_click & 1) ? SPR_PIN_UP : SPR_PIN_DOWN, r.left + 2, r.top + 3);
break;
}
case WWT_RESIZEBOX: {
assert(r.right - r.left == 11); // XXX - to ensure the same sizes are used everywhere!
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, 0);
DrawSprite(SPR_WINDOW_RESIZE, r.left + 3, r.top + 3);
break;
}
case WWT_CAPTION: {
assert(r.bottom - r.top == 13); // XXX - to ensure the same sizes are used everywhere!
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, 0x10);
DrawFrameRect(r.left+1, r.top+1, r.right-1, r.bottom-1, wi->color, (w->caption_color == 0xFF) ? 0x60 : 0x70);
if (w->caption_color != 0xFF) {
GfxFillRect(r.left+2, r.top+2, r.right-2, r.bottom-2, _color_list[_player_colors[w->caption_color]].window_color_1b);
}
DrawStringCentered( (r.left+r.right+1)>>1, r.top+2, wi->unkA, 0x84);
restore_dparam:;
if (w->desc_flags & WDF_RESTORE_DPARAM) COPY_IN_DPARAM(0, dparam_backup, lengthof(dparam_backup));
draw_default:;
if (cur_disabled & 1) {
GfxFillRect(r.left+1, r.top+1, r.right-1, r.bottom-1, _color_list[wi->color&0xF].unk2 | 0x8000);
}
}
}
} while (cur_click>>=1, cur_disabled>>=1, cur_hidden >>= 1, (++wi)->type != WWT_LAST);
if (w->flags4 & WF_WHITE_BORDER_MASK) {
//DrawFrameRect(w->left, w->top, w->left + w->width-1, w->top+w->height-1, 0xF, 0x10);
DrawFrameRect(0, 0, w->width-1, w->height-1, 0xF, 0x10);
}
}
static uint _dropdown_item_count;
static uint32 _dropdown_disabled;
static bool _dropdown_hide_disabled;
static const StringID *_dropdown_items;
static int _dropdown_selindex;
static byte _dropdown_button;
static WindowClass _dropdown_windowclass;
static WindowNumber _dropdown_windownum;
static byte _dropdown_var1;
static byte _dropdown_var2;
static uint32 _dropdown_disabled_items;
static const Widget _dropdown_menu_widgets[] = {
{ WWT_IMGBTN, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_NULL},
{ WIDGETS_END},
};
static int GetDropdownItem(Window *w)
{
uint item;
int y;
if (GetWidgetFromPos(w, _cursor.pos.x - w->left, _cursor.pos.y - w->top) < 0)
return -1;
y = _cursor.pos.y - w->top - 2;
if (y < 0)
return - 1;
item = y / 10;
if (item >= _dropdown_item_count || (HASBIT(_dropdown_disabled,item) && !_dropdown_disabled_items) || _dropdown_items[item] == 0)
return - 1;
return item;
}
static void DropdownMenuWndProc(Window *w, WindowEvent *e)
{
int item;
switch(e->event) {
case WE_PAINT: {
int x,y,i,sel;
DrawWindowWidgets(w);
x = 1;
y = 2;
sel = _dropdown_selindex;
for(i=0; _dropdown_items[i] != INVALID_STRING_ID; i++) {
if (HASBIT(_dropdown_disabled_items, i)) {
sel--;
continue;
}
if (_dropdown_items[i] != 0) {
if (sel == 0) {
GfxFillRect(x+1, y, x+w->width-4, y + 9, 0);
}
DrawString(x+2, y, _dropdown_items[i], sel==0 ? 12 : 16);
if (HASBIT(_dropdown_disabled, i) && !_dropdown_disabled_items) {
GfxFillRect(x, y, x+w->width-3, y + 9, 0x8000 +
_color_list[_dropdown_menu_widgets[0].color].window_color_bga);
}
} else {
int color_1 = _color_list[_dropdown_menu_widgets[0].color].window_color_1a;
int color_2 = _color_list[_dropdown_menu_widgets[0].color].window_color_2;
GfxFillRect(x+1, y+3, x+w->width-5, y+3, color_1);
GfxFillRect(x+1, y+4, x+w->width-5, y+4, color_2);
}
y += 10;
sel--;
}
} break;
case WE_CLICK: {
item = GetDropdownItem(w);
if (item >= 0) {
// make sure that item match the index of the string, that was clicked
// basically we just add one for each hidden item before the clicked one
byte counter;
for (counter = 0 ; item >= counter; ++counter) {
if (HASBIT(_dropdown_disabled_items, counter)) item++;
}
_dropdown_var1 = 4;
_dropdown_selindex = item;
SetWindowDirty(w);
}
} break;
case WE_MOUSELOOP: {
Window *w2 = FindWindowById(_dropdown_windowclass, _dropdown_windownum);
if (w2 == NULL) {
DeleteWindow(w);
return;
}
if (_dropdown_var1 != 0 && --_dropdown_var1 == 0) {
WindowEvent e;
e.event = WE_DROPDOWN_SELECT;
e.dropdown.button = _dropdown_button;
e.dropdown.index = _dropdown_selindex;
w2->wndproc(w2, &e);
DeleteWindow(w);
return;
}
if (_dropdown_var2 != 0) {
item = GetDropdownItem(w);
if (!_left_button_clicked) {
_dropdown_var2 = 0;
if (item < 0)
return;
_dropdown_var1 = 2;
} else {
if (item < 0)
return;
}
_dropdown_selindex = item;
SetWindowDirty(w);
}
} break;
case WE_DESTROY: {
Window *w2 = FindWindowById(_dropdown_windowclass, _dropdown_windownum);
if (w2 != NULL) {
CLRBIT(w2->click_state, _dropdown_button);
InvalidateWidget(w2, _dropdown_button);
}
} break;
}
}
void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask, bool remove_filtered_strings)
{
WindowNumber num;
WindowClass cls;
int i;
const Widget *wi;
Window *w2;
uint32 old_click_state = w->click_state;
_dropdown_disabled = disabled_mask;
_dropdown_hide_disabled = remove_filtered_strings;
cls = w->window_class;
num = w->window_number;
DeleteWindowById(WC_DROPDOWN_MENU, 0);
w = FindWindowById(cls, num);
if (HASBIT(old_click_state, button))
return;
SETBIT(w->click_state, button);
InvalidateWidget(w, button);
for(i=0;strings[i] != INVALID_STRING_ID;i++);
if (i == 0)
return;
_dropdown_items = strings;
_dropdown_item_count = i;
_dropdown_selindex = selected;
_dropdown_windowclass = w->window_class;
_dropdown_windownum = w->window_number;
_dropdown_button = button;
_dropdown_var1 = 0;
_dropdown_var2 = 1;
wi = &w->widget[button];
if ( remove_filtered_strings ) {
int j;
for(j=0; _dropdown_items[j] != INVALID_STRING_ID; j++) {
if ( disabled_mask & ( 1 << j )) {
_dropdown_item_count--;
i--;
}
}
}
w2 = AllocateWindow(
w->left + wi[-1].left + 1,
w->top + wi->bottom + 2,
wi->right - wi[-1].left + 1,
i * 10 + 4,
DropdownMenuWndProc,
0x3F,
_dropdown_menu_widgets);
w2->widget[0].color = wi->color;
w2->widget[0].right = wi->right - wi[-1].left;
w2->widget[0].bottom = i * 10 + 3;
_dropdown_disabled_items = remove_filtered_strings ? disabled_mask : 0;
w2->flags4 &= ~WF_WHITE_BORDER_MASK;
}