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bc8d1d7b0de5719f97052551e596745d8658c362
openttd/src/widget.cpp
rubidium 28ea38ae55 (svn r14949) -Cleanup: pointer coding style
2009-01-10 00:31:47 +00:00

630 lines
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/* $Id$ */
/** @file widget.cpp Handling of the default/simple widgets. */
#include "stdafx.h"
#include "openttd.h"
#include "core/math_func.hpp"
#include "company_func.h"
#include "gfx_func.h"
#include "window_gui.h"
#include "window_func.h"
#include "widgets/dropdown_func.h"
#include "table/sprites.h"
#include "table/strings.h"
static const char *UPARROW = "\xEE\x8A\xA0";
static const char *DOWNARROW = "\xEE\x8A\xAA";
/**
* Compute the vertical position of the draggable part of scrollbar
* @param sb Scrollbar list data
* @param top Top position of the scrollbar (top position of the up-button)
* @param bottom Bottom position of the scrollbar (bottom position of the down-button)
* @return A Point, with x containing the top coordinate of the draggable part, and
* y containing the bottom coordinate of the draggable part
*/
static Point HandleScrollbarHittest(const Scrollbar *sb, int top, int bottom)
{
Point pt;
int height, count, pos, cap;
top += 10; // top points to just below the up-button
bottom -= 9; // bottom points to top of the down-button
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.
* @param w Window on which a scroll was performed.
* @param wi Pointer to the scrollbar widget.
* @param x The X coordinate of the mouse click.
* @param 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: NOT_REACHED();
}
if (pos <= mi + 9) {
/* Pressing the upper button? */
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? */
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;
}
}
w->SetDirty();
}
/** Returns the index for the widget located at the given position
* relative to the window. It includes all widget-corner pixels as well.
* @param *w Window to look inside
* @param x The Window client X coordinate
* @param y The Window client y coordinate
* @return A widget index, or -1 if no widget was found.
*/
int GetWidgetFromPos(const Window *w, int x, int y)
{
uint index;
int found_index = -1;
/* Go through the widgets and check if we find the widget that the coordinate is
* inside. */
for (index = 0; index < w->widget_count; index++) {
const Widget *wi = &w->widget[index];
if (wi->type == WWT_EMPTY || wi->type == WWT_FRAME) continue;
if (x >= wi->left && x <= wi->right && y >= wi->top && y <= wi->bottom &&
!w->IsWidgetHidden(index)) {
found_index = index;
}
}
return found_index;
}
/**
* Draw frame rectangle.
* @param left Left edge of the frame
* @param top Top edge of the frame
* @param right Right edge of the frame
* @param bottom Bottom edge of the frame
* @param color Colour table to use. @see _colour_gradient
* @param flags Flags controlling how to draw the frame. @see FrameFlags
*/
void DrawFrameRect(int left, int top, int right, int bottom, int color, FrameFlags flags)
{
uint dark = _colour_gradient[color][3];
uint medium_dark = _colour_gradient[color][5];
uint medium_light = _colour_gradient[color][6];
uint light = _colour_gradient[color][7];
if (flags & FR_TRANSPARENT) {
GfxFillRect(left, top, right, bottom, PALETTE_TO_TRANSPARENT, FILLRECT_RECOLOR);
} else {
uint interior;
if (flags & FR_LOWERED) {
GfxFillRect(left, top, left, bottom, dark);
GfxFillRect(left + 1, top, right, top, dark);
GfxFillRect(right, top + 1, right, bottom - 1, light);
GfxFillRect(left + 1, bottom, right, bottom, light);
interior = (flags & FR_DARKENED ? medium_dark : medium_light);
} else {
GfxFillRect(left, top, left, bottom - 1, light);
GfxFillRect(left + 1, top, right - 1, top, light);
GfxFillRect(right, top, right, bottom - 1, dark);
GfxFillRect(left, bottom, right, bottom, dark);
interior = medium_dark;
}
if (!(flags & FR_BORDERONLY)) {
GfxFillRect(left + 1, top + 1, right - 1, bottom - 1, interior);
}
}
}
/**
* Paint all widgets of a window.
*/
void Window::DrawWidgets() const
{
const DrawPixelInfo *dpi = _cur_dpi;
for (uint i = 0; i < this->widget_count; i++) {
const Widget *wi = &this->widget[i];
bool clicked = this->IsWidgetLowered(i);
Rect r;
if (dpi->left > (r.right = wi->right) ||
dpi->left + dpi->width <= (r.left = wi->left) ||
dpi->top > (r.bottom = wi->bottom) ||
dpi->top + dpi->height <= (r.top = wi->top) ||
this->IsWidgetHidden(i)) {
continue;
}
switch (wi->type & WWT_MASK) {
case WWT_IMGBTN:
case WWT_IMGBTN_2: {
SpriteID img = wi->data;
assert(img != 0);
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
/* show different image when clicked for WWT_IMGBTN_2 */
if ((wi->type & WWT_MASK) == WWT_IMGBTN_2 && clicked) img++;
DrawSprite(img, PAL_NONE, r.left + 1 + clicked, r.top + 1 + clicked);
break;
}
case WWT_PANEL:
assert(wi->data == 0);
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
break;
case WWT_EDITBOX:
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, FR_LOWERED | FR_DARKENED);
break;
case WWT_TEXTBTN:
case WWT_TEXTBTN_2:
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
/* FALL THROUGH */
case WWT_LABEL: {
StringID str = wi->data;
if ((wi->type & WWT_MASK) == WWT_TEXTBTN_2 && clicked) str++;
DrawStringCentered(((r.left + r.right + 1) >> 1) + clicked, ((r.top + r.bottom + 1) >> 1) - 5 + clicked, str, TC_FROMSTRING);
break;
}
case WWT_TEXT: {
const StringID str = wi->data;
if (str != STR_NULL) DrawStringTruncated(r.left, r.top, str, wi->color, r.right - r.left);
break;
}
case WWT_INSET: {
const StringID str = wi->data;
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, FR_LOWERED | FR_DARKENED);
if (str != STR_NULL) DrawStringTruncated(r.left + 2, r.top + 1, str, TC_FROMSTRING, r.right - r.left - 10);
break;
}
case WWT_MATRIX: {
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
int c = GB(wi->data, 0, 8);
int amt1 = (wi->right - wi->left + 1) / c;
int d = GB(wi->data, 8, 8);
int amt2 = (wi->bottom - wi->top + 1) / d;
int color = _colour_gradient[wi->color & 0xF][6];
int x = r.left;
for (int ctr = c; ctr > 1; ctr--) {
x += amt1;
GfxFillRect(x, r.top + 1, x, r.bottom - 1, color);
}
x = r.top;
for (int ctr = d; ctr > 1; ctr--) {
x += amt2;
GfxFillRect(r.left + 1, x, r.right - 1, x, color);
}
color = _colour_gradient[wi->color & 0xF][4];
x = r.left - 1;
for (int ctr = c; ctr > 1; ctr--) {
x += amt1;
GfxFillRect(x, r.top + 1, x, r.bottom - 1, color);
}
x = r.top - 1;
for (int ctr = d; ctr > 1; ctr--) {
x += amt2;
GfxFillRect(r.left + 1, x, r.right - 1, x, color);
}
break;
}
/* vertical scrollbar */
case WWT_SCROLLBAR: {
assert(wi->data == 0);
assert(r.right - r.left == 11); // To ensure the same sizes are used everywhere!
/* draw up/down buttons */
clicked = ((this->flags4 & (WF_SCROLL_UP | WF_HSCROLL | WF_SCROLL2)) == WF_SCROLL_UP);
DrawFrameRect(r.left, r.top, r.right, r.top + 9, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DoDrawString(UPARROW, r.left + 2 + clicked, r.top + clicked, TC_BLACK);
clicked = (((this->flags4 & (WF_SCROLL_DOWN | WF_HSCROLL | WF_SCROLL2)) == WF_SCROLL_DOWN));
DrawFrameRect(r.left, r.bottom - 9, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DoDrawString(DOWNARROW, r.left + 2 + clicked, r.bottom - 9 + clicked, TC_BLACK);
int c1 = _colour_gradient[wi->color & 0xF][3];
int c2 = _colour_gradient[wi->color & 0xF][7];
/* 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, FILLRECT_CHECKER);
/* 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);
Point pt = HandleScrollbarHittest(&this->vscroll, r.top, r.bottom);
DrawFrameRect(r.left, pt.x, r.right, pt.y, wi->color, (this->flags4 & (WF_SCROLL_MIDDLE | WF_HSCROLL | WF_SCROLL2)) == WF_SCROLL_MIDDLE ? FR_LOWERED : FR_NONE);
break;
}
case WWT_SCROLL2BAR: {
assert(wi->data == 0);
assert(r.right - r.left == 11); // To ensure the same sizes are used everywhere!
/* draw up/down buttons */
clicked = ((this->flags4 & (WF_SCROLL_UP | WF_HSCROLL | WF_SCROLL2)) == (WF_SCROLL_UP | WF_SCROLL2));
DrawFrameRect(r.left, r.top, r.right, r.top + 9, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DoDrawString(UPARROW, r.left + 2 + clicked, r.top + clicked, TC_BLACK);
clicked = ((this->flags4 & (WF_SCROLL_DOWN | WF_HSCROLL | WF_SCROLL2)) == (WF_SCROLL_DOWN | WF_SCROLL2));
DrawFrameRect(r.left, r.bottom - 9, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DoDrawString(DOWNARROW, r.left + 2 + clicked, r.bottom - 9 + clicked, TC_BLACK);
int c1 = _colour_gradient[wi->color & 0xF][3];
int c2 = _colour_gradient[wi->color & 0xF][7];
/* 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, FILLRECT_CHECKER);
/* 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);
Point pt = HandleScrollbarHittest(&this->vscroll2, r.top, r.bottom);
DrawFrameRect(r.left, pt.x, r.right, pt.y, wi->color, (this->flags4 & (WF_SCROLL_MIDDLE | WF_HSCROLL | WF_SCROLL2)) == (WF_SCROLL_MIDDLE | WF_SCROLL2) ? FR_LOWERED : FR_NONE);
break;
}
/* horizontal scrollbar */
case WWT_HSCROLLBAR: {
assert(wi->data == 0);
assert(r.bottom - r.top == 11); // To ensure the same sizes are used everywhere!
clicked = ((this->flags4 & (WF_SCROLL_UP | WF_HSCROLL)) == (WF_SCROLL_UP | WF_HSCROLL));
DrawFrameRect(r.left, r.top, r.left + 9, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DrawSprite(SPR_ARROW_LEFT, PAL_NONE, r.left + 1 + clicked, r.top + 1 + clicked);
clicked = ((this->flags4 & (WF_SCROLL_DOWN | WF_HSCROLL)) == (WF_SCROLL_DOWN | WF_HSCROLL));
DrawFrameRect(r.right - 9, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DrawSprite(SPR_ARROW_RIGHT, PAL_NONE, r.right - 8 + clicked, r.top + 1 + clicked);
int c1 = _colour_gradient[wi->color & 0xF][3];
int c2 = _colour_gradient[wi->color & 0xF][7];
/* 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, FILLRECT_CHECKER);
/* 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 */
Point pt = HandleScrollbarHittest(&this->hscroll, r.left, r.right);
DrawFrameRect(pt.x, r.top, pt.y, r.bottom, wi->color, (this->flags4 & (WF_SCROLL_MIDDLE | WF_HSCROLL)) == (WF_SCROLL_MIDDLE | WF_HSCROLL) ? FR_LOWERED : FR_NONE);
break;
}
case WWT_FRAME: {
const StringID str = wi->data;
int x2 = r.left; // by default the left side is the left side of the widget
if (str != STR_NULL) x2 = DrawString(r.left + 6, r.top, str, TC_FROMSTRING);
int c1 = _colour_gradient[wi->color][3];
int c2 = _colour_gradient[wi->color][7];
/* 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);
break;
}
case WWT_STICKYBOX:
assert(wi->data == 0);
assert(r.right - r.left == 11); // To ensure the same sizes are used everywhere!
clicked = !!(this->flags4 & WF_STICKY);
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DrawSprite((clicked) ? SPR_PIN_UP : SPR_PIN_DOWN, PAL_NONE, r.left + 2 + clicked, r.top + 3 + clicked);
break;
case WWT_RESIZEBOX:
assert(wi->data == 0);
assert(r.right - r.left == 11); // To ensure the same sizes are used everywhere!
clicked = !!(this->flags4 & WF_SIZING);
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, (clicked) ? FR_LOWERED : FR_NONE);
DrawSprite(SPR_WINDOW_RESIZE, PAL_NONE, r.left + 3 + clicked, r.top + 3 + clicked);
break;
case WWT_CLOSEBOX: {
const StringID str = wi->data;
assert(str == STR_00C5 || str == STR_00C6); // black or silver cross
assert(r.right - r.left == 10); // To ensure the same sizes are used everywhere
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, FR_NONE);
DrawString(r.left + 2, r.top + 2, str, TC_FROMSTRING);
break;
}
case WWT_CAPTION:
assert(r.bottom - r.top == 13); // To ensure the same sizes are used everywhere!
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, FR_BORDERONLY);
DrawFrameRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, wi->color, (this->caption_color == 0xFF) ? FR_LOWERED | FR_DARKENED : FR_LOWERED | FR_DARKENED | FR_BORDERONLY);
if (this->caption_color != 0xFF) {
GfxFillRect(r.left + 2, r.top + 2, r.right - 2, r.bottom - 2, _colour_gradient[_company_colours[this->caption_color]][4]);
}
DrawStringCenteredTruncated(r.left + 2, r.right - 2, r.top + 2, wi->data, TC_FROMSTRING);
break;
case WWT_DROPDOWN: {
assert(r.bottom - r.top == 11); // ensure consistent size
StringID str = wi->data;
DrawFrameRect(r.left, r.top, r.right - 12, r.bottom, wi->color, FR_NONE);
DrawFrameRect(r.right - 11, r.top, r.right, r.bottom, wi->color, clicked ? FR_LOWERED : FR_NONE);
DrawString(r.right - (clicked ? 8 : 9), r.top + (clicked ? 2 : 1), STR_0225, TC_BLACK);
if (str != STR_NULL) DrawStringTruncated(r.left + 2, r.top + 1, str, TC_BLACK, r.right - r.left - 12);
break;
}
case WWT_DROPDOWNIN: {
assert(r.bottom - r.top == 11); // ensure consistent size
StringID str = wi->data;
DrawFrameRect(r.left, r.top, r.right, r.bottom, wi->color, FR_LOWERED | FR_DARKENED);
DrawFrameRect(r.right - 11, r.top + 1, r.right - 1, r.bottom - 1, wi->color, clicked ? FR_LOWERED : FR_NONE);
DrawString(r.right - (clicked ? 8 : 9), r.top + (clicked ? 2 : 1), STR_0225, TC_BLACK);
if (str != STR_NULL) DrawStringTruncated(r.left + 2, r.top + 2, str, TC_BLACK, r.right - r.left - 12);
break;
}
}
if (this->IsWidgetDisabled(i)) {
GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, _colour_gradient[wi->color & 0xF][2], FILLRECT_CHECKER);
}
}
if (this->flags4 & WF_WHITE_BORDER_MASK) {
DrawFrameRect(0, 0, this->width - 1, this->height - 1, COLOUR_WHITE, FR_BORDERONLY);
}
}
static void ResizeWidgets(Window *w, byte a, byte b)
{
int16 offset = w->widget[a].left;
int16 length = w->widget[b].right - offset;
w->widget[a].right = (length / 2) + offset;
w->widget[b].left = w->widget[a].right + 1;
}
static void ResizeWidgets(Window *w, byte a, byte b, byte c)
{
int16 offset = w->widget[a].left;
int16 length = w->widget[c].right - offset;
w->widget[a].right = length / 3;
w->widget[b].right = w->widget[a].right * 2;
w->widget[a].right += offset;
w->widget[b].right += offset;
/* Now the right side of the buttons are set. We will now set the left sides next to them */
w->widget[b].left = w->widget[a].right + 1;
w->widget[c].left = w->widget[b].right + 1;
}
/** Evenly distribute some widgets when resizing horizontally (often a button row)
* When only two arguments are given, the widgets are presumed to be on a line and only the ends are given
* @param w Window to modify
* @param left The leftmost widget to resize
* @param right The rightmost widget to resize. Since right side of it is used, remember to set it to RESIZE_RIGHT
*/
void ResizeButtons(Window *w, byte left, byte right)
{
int16 num_widgets = right - left + 1;
if (num_widgets < 2) NOT_REACHED();
switch (num_widgets) {
case 2: ResizeWidgets(w, left, right); break;
case 3: ResizeWidgets(w, left, left + 1, right); break;
default: {
/* Looks like we got more than 3 widgets to resize
* Now we will find the middle of the space desinated for the widgets
* and place half of the widgets on each side of it and call recursively.
* Eventually we will get down to blocks of 2-3 widgets and we got code to handle those cases */
int16 offset = w->widget[left].left;
int16 length = w->widget[right].right - offset;
byte widget = ((num_widgets - 1)/ 2) + left; // rightmost widget of the left side
/* Now we need to find the middle of the widgets.
* It will not always be the middle because if we got an uneven number of widgets,
* we will need it to be 2/5, 3/7 and so on
* To get this, we multiply with num_widgets/num_widgets. Since we calculate in int, we will get:
*
* num_widgets/2 (rounding down)
* ---------------
* num_widgets
*
* as multiplier to length. We just multiply before divide to that we stay in the int area though */
int16 middle = ((length * num_widgets) / (2 * num_widgets)) + offset;
/* Set left and right on the widgets, that's next to our "middle" */
w->widget[widget].right = middle;
w->widget[widget + 1].left = w->widget[widget].right + 1;
/* Now resize the left and right of the middle */
ResizeButtons(w, left, widget);
ResizeButtons(w, widget + 1, right);
}
}
}
/** Resize a widget and shuffle other widgets around to fit. */
void ResizeWindowForWidget(Window *w, uint widget, int delta_x, int delta_y)
{
int right = w->widget[widget].right;
int bottom = w->widget[widget].bottom;
for (uint i = 0; i < w->widget_count; i++) {
if (w->widget[i].left >= right && i != widget) w->widget[i].left += delta_x;
if (w->widget[i].right >= right) w->widget[i].right += delta_x;
if (w->widget[i].top >= bottom && i != widget) w->widget[i].top += delta_y;
if (w->widget[i].bottom >= bottom) w->widget[i].bottom += delta_y;
}
/* A hidden widget has bottom == top or right == left, we need to make it
* one less to fit in its new gap. */
if (right == w->widget[widget].left) w->widget[widget].right--;
if (bottom == w->widget[widget].top) w->widget[widget].bottom--;
if (w->widget[widget].left > w->widget[widget].right) w->widget[widget].right = w->widget[widget].left;
if (w->widget[widget].top > w->widget[widget].bottom) w->widget[widget].bottom = w->widget[widget].top;
w->width += delta_x;
w->height += delta_y;
w->resize.width += delta_x;
w->resize.height += delta_y;
}
/**
* Draw a sort button's up or down arrow symbol.
* @param widget Sort button widget
* @param state State of sort button
*/
void Window::DrawSortButtonState(int widget, SortButtonState state) const
{
if (state == SBS_OFF) return;
int offset = this->IsWidgetLowered(widget) ? 1 : 0;
DoDrawString(state == SBS_DOWN ? DOWNARROW : UPARROW, this->widget[widget].right - 11 + offset, this->widget[widget].top + 1 + offset, TC_BLACK);
}
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