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{$INCLUDE Switches.inc}
unit TechTree;
interface
uses
ScreenTools, LCLIntf, LCLType, SysUtils, Classes, Graphics,
Controls, Forms, ButtonB, DrawDlg;
type
{ TTechTreeDlg }
TTechTreeDlg = class(TDrawDlg)
CloseBtn: TButtonB;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormPaint(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure FormMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
procedure CloseBtnClick(Sender: TObject);
private
xOffset, yOffset, xDown, yDown: Integer;
Image: TBitmap;
Dragging: Boolean;
end;
var
TechTreeDlg: TTechTreeDlg;
implementation
uses
Directories;
{$R *.lfm}
const
BlackBorder = 4;
LeftBorder = 72;
RightBorder = 45;
TopBorder = 16;
BottomBorder = 48;
xStart = 0;
yStart = 40;
xPitch = 160;
yPitch = 90;
xLegend = 44;
yLegend = 79;
yLegendPitch = 32;
function min(a, b: Integer): Integer;
begin
if a < b then
result := a
else
result := b;
end;
function max(a, b: Integer): Integer;
begin
if a > b then
result := a
else
result := b;
end;
procedure TTechTreeDlg.FormCreate(Sender: TObject);
begin
InitButtons;
Image := nil;
end;
procedure TTechTreeDlg.FormDestroy(Sender: TObject);
begin
FreeAndNil(Image);
end;
procedure TTechTreeDlg.FormPaint(Sender: TObject);
var
X, w: Integer;
begin
with Canvas do begin
// black border
brush.color := $000000;
fillrect(rect(0, 0, BlackBorder, ClientHeight));
fillrect(rect(BlackBorder, 0, ClientWidth - BlackBorder, BlackBorder));
fillrect(rect(ClientWidth - BlackBorder, 0, ClientWidth, ClientHeight));
fillrect(rect(BlackBorder, ClientHeight - BlackBorder,
ClientWidth - BlackBorder, ClientHeight));
// texturize empty space
brush.color := $FFFFFF;
if xOffset > 0 then
FillRectSeamless(Canvas, BlackBorder, BlackBorder, BlackBorder + xOffset,
ClientHeight - BlackBorder, -BlackBorder - xOffset,
-BlackBorder - yOffset, Paper);
if xOffset + Image.width < ClientWidth - 2 * BlackBorder then
FillRectSeamless(Canvas, BlackBorder + xOffset + Image.width, BlackBorder,
ClientWidth - BlackBorder, ClientHeight - BlackBorder,
-BlackBorder - xOffset, -BlackBorder - yOffset, Paper);
X := max(BlackBorder, BlackBorder + xOffset);
w := min(BlackBorder + xOffset + Image.width, ClientWidth - BlackBorder);
if yOffset > 0 then
FillRectSeamless(Canvas, X, BlackBorder, w, BlackBorder + yOffset,
-BlackBorder - xOffset, -BlackBorder - yOffset, Paper);
if yOffset + Image.height < ClientHeight - 2 * BlackBorder then
FillRectSeamless(Canvas, X, BlackBorder + yOffset + Image.height, w,
ClientHeight - BlackBorder, -BlackBorder - xOffset,
-BlackBorder - yOffset, Paper);
end;
BitBltCanvas(Canvas, max(BlackBorder, BlackBorder + xOffset),
max(BlackBorder, BlackBorder + yOffset),
min(Image.width, min(Image.width + xOffset,
min(ClientWidth - 2 * BlackBorder, ClientWidth - 2 * BlackBorder - xOffset))
), min(Image.height, min(Image.height + yOffset,
min(ClientHeight - 2 * BlackBorder, ClientHeight - 2 * BlackBorder -
yOffset))), Image.Canvas, max(0, -xOffset),
max(0, -yOffset));
end;
procedure TTechTreeDlg.FormShow(Sender: TObject);
var
X, Y, ad: Integer;
s: string;
NewWidth: Integer;
NewHeight: Integer;
begin
Caption := Phrases2.Lookup('MENU_ADVTREE');
if Image = nil then begin
Image := TBitmap.Create;
Image.PixelFormat := pf24bit;
LoadGraphicFile(Image, HomeDir + 'Help' + DirectorySeparator + 'AdvTree.png',
[gfNoGamma]);
with Image.Canvas do begin
// write advance names
Font.Assign(UniFont[ftSmall]);
Font.color := clBlack;
brush.Style := bsClear;
for X := 0 to (Image.width - xStart) div xPitch do
for Y := 0 to (Image.height - yStart) div yPitch do
begin
ad := Pixels[xStart + X * xPitch + 10, yStart + Y * yPitch - 1];
if ad and $FFFF00 = 0 then
begin
s := Phrases.Lookup('ADVANCES', ad);
while TextWidth(s) > 112 do
Delete(s, Length(s), 1);
TextOut(xStart + X * xPitch + 2, yStart + Y * yPitch, s);
Pixels[xStart + X * xPitch + 10, yStart + Y * yPitch - 1]
:= TransparentColor2;
end
end;
// write legend
TextOut(xLegend, yLegend, Phrases2.Lookup('ADVTREE_UP0'));
TextOut(xLegend, yLegend + yLegendPitch, Phrases2.Lookup('ADVTREE_UP1'));
TextOut(xLegend, yLegend + 2 * yLegendPitch,
Phrases2.Lookup('ADVTREE_UP2'));
TextOut(xLegend, yLegend + 3 * yLegendPitch,
Phrases2.Lookup('ADVTREE_GOV'));
TextOut(xLegend, yLegend + 4 * yLegendPitch,
Phrases2.Lookup('ADVTREE_OTHER'));
end;
Texturize(Image, Paper, TransparentColor2);
end;
// fit window to image, center image in window, center window to screen
NewWidth := Min(Screen.Width - 40, Image.Width + LeftBorder + RightBorder + 2 * BlackBorder);
NewHeight := Min(Screen.Height - 40, Image.Height + TopBorder + BottomBorder + 2 * BlackBorder);
BoundsRect := Bounds((Screen.Width - NewWidth) div 2,
(Screen.Height - NewHeight) div 2,
NewWidth, NewHeight);
CloseBtn.Left := width - CloseBtn.width - BlackBorder - 8;
CloseBtn.Top := BlackBorder + 8;
xOffset := (ClientWidth - Image.Width + LeftBorder - RightBorder) div 2 -
BlackBorder;
yOffset := ClientHeight - 2 * BlackBorder - Image.Height - BottomBorder;
end;
procedure TTechTreeDlg.FormMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
if Button = mbLeft then
begin
dragging := true;
xDown := X;
yDown := Y;
end;
end;
procedure TTechTreeDlg.FormMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
dragging := false;
end;
procedure TTechTreeDlg.FormMouseMove(Sender: TObject; Shift: TShiftState;
X, Y: Integer);
begin
if dragging then
begin
xOffset := xOffset + X - xDown;
yOffset := yOffset + Y - yDown;
xDown := X;
yDown := Y;
if xOffset > LeftBorder then
xOffset := LeftBorder;
if xOffset < ClientWidth - 2 * BlackBorder - Image.width - RightBorder then
xOffset := ClientWidth - 2 * BlackBorder - Image.width - RightBorder;
if yOffset > TopBorder then
yOffset := TopBorder;
if yOffset < ClientHeight - 2 * BlackBorder - Image.height - BottomBorder
then
yOffset := ClientHeight - 2 * BlackBorder - Image.height - BottomBorder;
SmartInvalidate;
end;
end;
procedure TTechTreeDlg.CloseBtnClick(Sender: TObject);
begin
Close;
end;
end.
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